21 An object is moving on a horizontal frictionless surface. If the net force applied to the object in the direction of motion is doubled, the magnitude of the acceleration of the object is (1) halved (2) doubled (3) unchanged (4) quadrupled
Q: 1.If we know an object is moving at constant velocity, we may assume: a. the net force acting on the…
A: Since, there are multiple questions posted by you, we will solve the first question (1). To get the…
Q: 118. As an object initially at rest on a horizontal surface is set in motion, the magnitude of the…
A: The force of friction between the object and the surface depends on the normal force. When the…
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Q: 9. You throw a ball vertically upward. After the ball has left your hand and is moving upward, what…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 8. Two forces F1 = 60N and F2 = 40N act on a 4-kg object placed on the frictionless horizontal plane…
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Q: 77. A locomotive is pushing a train at a constant velocity of 3 mis. How does the force exerted by…
A: We use Newton's Laws to find the answer.
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Q: A force of 40 N, 180° accelerates a 5.0 kg block at 6.0 m/s2, 180° along a horizontal surface. (a)…
A: Given data: Force, F = 40 N Mass, m = 5 kg Acceleration , a = 6 m/s2 Solution: a) Determine the…
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Q: 4. Assume that an object has no unbalanced force acting on it. Which statement about the object is…
A: Part (14): Introduction: The unbalance force on the object means the net force on the object will be…
Q: 7) In an automobile safety test, a shoulder and seat belt exerts a force of 422N directly backward,…
A: Given data The magnitude of the force exerted by the shoulder and seat is F1 = 422 N The magnitude…
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Q: 19. Block B, with mass 5.00 kg, rests on block A, with mass 8.00 kg, which in turn is on a…
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Q: 8. Determine the acceleration of the block up the hill. The coefficient of friction is 0.1 M= 3.0 kg…
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Q: 2. A 32 N force, parallel to the incline, is required to push a certain crate at constant velocity…
A: According to guideline , we need to solve only first Question ? Given that A 32 N force, parallel…
Q: 7. A cart is uniformly accelerating from rest. The net force acting on the cart is (1) decreasing…
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Q: A box is being dragged across the tabletop at a constant speed. Friction applies 50 N of resistive…
A: Given information: A box is dragged across the tabletop. The force of friction, fr=50 N The box is…
Q: 59. A cart is uniformly accelerating from rest. The net force acting on the cart is (1) decreasing…
A: 59) Given statement : a cart is uniformly accelerating from rest
Q: An electron of mass 9.11 x 10 kg has an initial speed of 3.00 x 10° m/s. It travels in a straight…
A: The third equation of motion is v2 = u2 + 2 a s where, u is the initial velocity, v is the final…
Q: 5. Two crates, of mass 75 kg and 110 kg, are in contact and at rest on a horizontal surface, as…
A: We will depict the following situation with a help of a free-body diagram so that you will get a…
Q: 1. The net external force acting on an object is zero. Is it possible for the object to be traveling…
A: Assume that a block on an inclined surface with friction starts moving downward from rest. If the…
Q: Multiple Objects, Example 3 10 Mgcose (a) (b) e Them e Ce Draw the free-body diagram for each object…
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Q: A mop is pushed across the floor with a force F of 43.3 N at an angle of θ = 51.8 ∘ . The mass of…
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Q: 62. As the vector sum of all the forces acting on a moving object increases, the magnitude of the…
A: Part (62): Given: The vector sum of total forces increases. Introduction: The vector sum of the…
Q: F1=11.0 N and F2=21.0 N 1. Find the direction of the net force on the object for (b). 2. Find the…
A: (1) The horizontal components of the force F1 can be written as F1x=F1cosθ1F1x=11.0 Ncos30°F1x=9.53…
Q: Two forces, Fı = 2.50 i N and F2 = (1.20 i – 2.30 j) N , act on a 3.00 kg object. Find the magnitude…
A: Write a given values of this question. F→1=2.50i^NF→1=1.20i^-2.30j^Nm=3.0kg
Q: 17. One object exerts a force of magnitude F1 on another object and experiences a force of magnitude…
A: According to Newton's third law of motion, if a body A exerts a force on body B, then body B also…
Q: 8. A 300-N force is exerted at a 60-degree angle to move a railroad car eastward along a railroad…
A: Applied force (F) = 300 N angle (θ) = 60o south of east
Q: 2. An electron of mass 9.11 x 103 kg has an initial speed of 3.00 x 10 m/s. It travels in a straight…
A: Given data: Mass of the electron, Me = 9.11×10-31kg Initial speed, u = 3.00×105m/s Final…
Q: An electron of mass 9.11 x 103 kg has an initial speed of 2.20 x 10° m/s. It travels in a straight…
A: Part A. Firstly acceleration will be calculated by following formula: v2-u2=2as Here v is the final…
Q: An object of mass 12.0 kg subjected to a non-zero net force moves with an acceleration of 1.7 m/s2.…
A: According to Newton second lawF=m.aHereF=force on objectm=mass of objecta=acceleration of object
Q: 3. Three people pull on rope attached to a ring. One force Fi has magnitude of 100N and pulls along…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: 15. A particle which moves from rest is acted upon by two forces : a constant forward force and a…
A: Initially the velocity is zero and net force is only the constant forward force, thus there would be…
Q: A 70.0 kg box is being pulled along a horizontal surface. The coefficient of kinetic friction…
A: Given data: Mass (m) = 70.0 kg Coefficient of kinetic friction (μk) = 0.250 Acceleration (a) = 1.20…
Q: 14. The force of kinetic friction is always in the opposite direction of motion. (a) True (b) False
A: There are two types of friction. (1) Static friction (2) Dynamic Friction In case of static…
Q: An object weighing 50 lbf is being pushed downwards at an angle of 40° with the horizontal is…
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Q: In which scenario is there a non-zero net force acting on the object? A I only I and II C Neither I…
A: Correct option is c) neither 1 nor 2 .
Q: 2. To move a large crate of mass 32.0 kg across a rough floor, with coefficient of kinetic friction…
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Q: 8. An object is sliding along an icy surface. The frictional force causing it to slow down depends…
A: Since the object is moving on a rough surface so friction act on the object and object is moving so…
Q: 26. A cart is uniformly accelerating from rest. The net force acting on the cart is a. decreasing b.…
A: Given data: Cart's acceleration uniform Initial velocity = 0, starting from rest
Q: FRICTIONLESS A woman resting on ice, with mass 74.8 kg was pulled by a man with force F at 35…
A: The displacement of woman is due to the horizontal component of the applied force. the woman…
Q: 15. A cart is uniformly accelerating from rest. The net force àcting the cart is (1) decreasing (2)…
A: According to Newton's second law F = ma
Q: 15. A cart is uniformly accelerating from rest. The net force acting on the cart is (1) decreasing…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 30. An object is acted upon by an applied force F and a normal force N due to a surface with…
A: Required diagram: where; F - Applied force N - Normal force
Q: 9. On a farm, you pull a 4.3 kg bucket of water up from a well with a force of 55.2 N while a 5N…
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Q: 7. If we know an object is moving at constant velocity, then we can be certain... the net force…
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Q: as a fish jump vertically out of the water, assume that only two significant forces act on it: an…
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Q: Each of the seeds being blown off the head of a dandelion (genus Taraxacum) has a feathery structure…
A: When the seed goes don with steady speed ,the acceleration and hence net force on it is zero.
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- If a single constant force acts on an object that moves on a straight line, the objects velocity is a linear function of time. The equation v = vi + at gives its velocity v as a function of time, where a is its constant acceleration. What if velocity is instead a linear function of position? Assume that as a particular object moves through a resistive medium, its speed decreases as described by the equation v = vi kx, where k is a constant coefficient and x is the position of the object. Find the law describing the total force acting on this object.Three forces acting on an object are given by F₁ = (−2.2î + 6.85ĵ) N, F₂ = (4.75î – 1.25ĵ) N, and F3 = (-401) N. The object experiences an acceleration of magnitude 3.80 m/s². (a) What is the direction of the acceleration? 98.50 X Note that the direction of the acceleration is the same as the direction of the net force.° (counterclockwise from the +x-axis) (b) What is the mass of the object? 9.964 kg (c) If the object is initially at rest, what is its speed after 11.0 s? 41.8 m/s (d) What are the velocity components of the object after 11.0 s? (Let the velocity be denoted by v.) ✓ = -41.34 m/s +6.18A 20kg wagon is pulled along the level ground by a rope inclined at 30degrees above the horizontal. A friction force of 30N opposes the motion. What is the magnitude of the pulling force if the wagon is moving with (a) constant speed, (b) an acceleration of 0.400 m/s2?
- "A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of magnitude F = 300N on the rope, which is inclined at an upward angle q = 30° to the horizontal, and the floor exerts a horizontal force of magnitude f = 200N that opposes the motion. Calculate the magnitude of the acceleration (in the unit m/s2) of the crate if its mass is 200 kg."Three forces acting on an object are given by F, = (-2.15î + 6.80j) N, F, = (4.80î – 2.5j) N, and F, = (-48.5î) N. The object experiences an acceleration of magnitude 3.90 m/s2. (a) What is the direction of the acceleration? ° (counterclockwise from the +x-axis) (b) What is the mass of the object? kg (c) If the object is initially at rest, what is its speed after 17.0 s? m/s (d) What are the velocity components of the object after 17.0 s? (Let the velocity be denoted by v.) v = ĵ) m/sOnly one force acts on an object.Can the object have zeroacceleration? Can it have zero velocity? Explain.
- An object of mass 50kg is pushed in the +x direction with a force of 40N flat along a horizontal surface causing a net acceleration of 0.15m/s2 in the +x direction. What is the coefficient of kinetic friction between the surface and the object?"A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of magnitude F = 400N on the rope, which is inclined at an upward angle q = 30° to the horizontal, and the floor exerts a horizontal force of magnitude f = 200N that opposes the motion. Calculate the magnitude of the acceleration (in the unit m/s?) of the crate if its mass is 200 kg." 0.73 0.63 0.53 0.43 ооооA 2.0 kg particle moves along an x axis, being propelled by a variable force directed along that axis. Its position is given by x = 3.0 m + (4.0 m/s)t + ct2 - (2.0 m/s3)t3, with x in meters and t in seconds.The factor c is a constant.At t = 3.0 s, the force on the particle has a magnitude of 36 N and is in the negative direction of the axis.What is c?
- A high diver of mass 69.8 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.30 s after her feet first touch the water, what average upward force did the water exert on her?A force of 1.50 N acts on a 0.20-kg carts so as to uniformly accelerate it along a straight air track. The track and force are horizontal and in line. How fast is the cart going after acceleration from rest through 30 cm, if friction is negligible?An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep crouch, pushed straight up for 0.21 s, and reached a height of 2.5 m above the ground. To achieve this vertical leap, with what force did the impala push down on the ground? What is the ratio of this force to the antelope’s weight?