2. How much force would a car's tires need to provide to accelerate an 1800 kg car at a rate of 4.0 m/s? (our answer: P 39 N O 450 N O 1800 N O 7200 N
Q: 5. If the mass of the pulley is ignored, the acceleration of the blocks is 2.45 m/s?. 5 kg 3 kg
A: Given data, Mass of the blocks = 5 kg and 3 kg
Q: 4. A 10.0 kg mass hangs on a string with a tension of 52.0 N, what is its acceleration? (-4.61 × 4.6…
A: Given data Mass m=10.0 kg Acceleration due to gravity is g=9.80 m/s2 Tension in the string is T=52.0…
Q: 15. Using the answer for question 14, and given a cart mass of M = 3.0 kg, the hanging mass, m (kg)…
A: Using the answer for question 14, and given a cart mass of M = 3.0 kg, = the hanging mass, m (kg)…
Q: 70. A 1450-kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant…
A:
Q: How much force is needed to accelerate a trolley of mass 20 g through 1 m/s-2? (Ans. 2 x 10-2 N)
A: According to Newton second lawF=mahereF=force on objectm=mass of objecta=acceleration of object
Q: 20. What happens to the inward acceleration of an object when the mass is quadrupled? a. The inward…
A:
Q: 2. Arnold can exert a horizontal force of 850 N. What is the mass of the biggest bad guy he can pin…
A: According to bartleby policy I can only answer one question. So I am answering the first question.
Q: How much force does it take to make a 2.0 kg object accelerate at a rate of 8.0 m/s2? Your answer: O…
A: Given Mass (m) = 2 kg Acceleration (a) = 8m/s2
Q: 15. Why does an object in motion remain in motion, while an object at rest, rem O The object is…
A:
Q: A girl has a mass of 55 kg. Using g = 9.8 Nkg-, calculate her weight. КА) 5.6 N (В) 45.2 N (C) 64.8…
A: m= 55kg g= 9.8 N/kg weight= W
Q: An object with a mass of 1.5 Kg accelerates 10.0 m/s2 when an unknown force is applied to it. What…
A:
Q: 2. If a net horizontal force of 175 N is applied to a bike whose mass is 43 kg what acceleration is…
A: Data Given , Force ( F ) = 175 N Mass of the bike ( m ) = 43 kg Let , the acceleration is = a m/s2
Q: 6. A person of 45 kg can accelerate at 1.5 m/s? on a straight road. What is the force created? (2…
A: By Newton's second law F = ma F = 45×1.5 F = 67.5 N
Q: 4. A baseball bat moving at high velocity strikes a feather. If air resistance is neglected,…
A:
Q: 82. Shown below is a body of mass 1.0 kg under the influence of the forces FA, FR, and mg. If the…
A: Given Mass m=1 kg acceleration a=20m/s2
Q: 02. What push P up the incline is needed to move a 200-N block up the incline at constant speed if μ…
A: Draw the free-body diagram of the system.
Q: How much force is required to keep a 3.kg object moving to the right with a constant speed of 6.0…
A: solution as follow
Q: A 0.50-kg cart (#1) is pulled with a 1.0-N force for 1 second; another 0.50 kg cart (#2) is pulled…
A: The mass of cart one and two is 0.50 kg and the force applied on cart 1 is 1.0N, and cart 2 is 2.0N…
Q: 83. Two ice skaters, one with a mass of 57 kg and the Th other with a mass of 75 kg, stand facing…
A: According to Newton's third law Every action has equal and opposite reaction.
Q: How much force would a car’s tires need to provide to accelerate an 1800 kg car at a rate of 4.0…
A: The given values with suitable variables are listed below. Here, m denotes the car’s mass and a…
Q: 10. Three masses at rest m1= 1.0kg, m2 = 2.0kg and m3 = 3.0kg are given equal and constant forces,…
A: Given, Three masses at rest are given an equal and constant force. The masses are: m1=1 kgm2=2…
Q: A 1.0 kg wood block is pressed against a vertical wood wall by a 12 N force as shown. If the block…
A:
Q: 1. force that q2 exerts to q3 * 90000N O 22500N O 10000 N O 2.0 x 10 * 4 N O 5.1 x 10 ^-5 N O ON
A:
Q: 2. The figure shows three blocks attached by cords that loop over frictionless pulleys. Block B…
A:
Q: (82) Shown below is a body of mass 1.0 kg under the influence of the forces F, F, and mg. If the…
A: SOlution: given that m = 1 kg a = 20 m/s2
Q: A 20 kg bike accelerates at 10 m/s“. With what force was the person pedaling? Reminder: F = ma O 30…
A: Given Mass of bike is m= 20 kg Acceleration of bike is a= 10 m/s2 Find the amount of force acting on…
Q: A squid is able to use a type of jet propulsion to accelerate away from predators by ejecting water…
A:
Q: A 60kg bicycle and rider accelerate at 0.5 m/s2. How much extra force was applied? O15N 47 N O 30 N…
A: Given data : Acceleration is denoted by a Mass is denoted by m Required : Force
Q: 6. How long must a 50 N force act on a 400 kg mass to raise its speed from 10 m/s to 12 m/s?
A: Force , F = 50 N Mass , M = 400 kg V1 = 10 m/s V2 = 12 m/s To find = Time
Q: 5. An object with a mass of 7.5 kg accelerates 8.3 m/s? when an unknown force is applied to it. What…
A: Given mass of object m = 7.5 kg acceleration of object a = 8.3 m/s2
Q: 2. An object with a mass of 5.0 kg accelerates 8.0 m/s? when an unknown force is applied to it. What…
A: According to Newton's 2nd Law: F = ma ...... (1)…
Q: 5. How much force must be applied by a kicker to give a stationary 2.5-kg ball an acceleration of…
A: Given Mass m = 2.5 kg Acceleration a = 40 m/s2
Q: 6. If a small child stands on a spring scale at home, it reads 100 N, which means his mass is 10 kg.…
A:
Q: 1. A little boy pushes a wagon with his dog in it. The mass of the dog and wagon together is 45 kg.…
A: 1. Mass of dog and wagon together, m=45kg Acceleration produced, a=0.85m/s2 Let the force by which…
Q: How much force is needed to accelerate a 66 kg Skier at im/s^2? O 6.6 N O 66 N O 100 N O 10 N
A: Given that, Mass of the Skier, m = 66 kg Acceleration of the skier, a = 1 m/s2 We need to find the…
Q: 4. If w ball is rolling with the velocity of 20 cm/sec and no force acts on it . What will it’s…
A: Newton first law is law of inertia; the body tends to maintain the status of uniform motion or…
Q: 5. A crate with a mass of 30 kg rests on a floor. On top of the crate stands a 45-kg girl. What is…
A:
Q: What net force is needed to give a 40.0 kg grocery cart an acceleration of 2.4 m/s^2? a. 0.06 N c.…
A: Force is directly proportional to the product of mass with acceleration F=ma Where, M is the mass a…
Q: There are two forces on the 6.4 kg crate in the overhead view of the figure below, but only one is…
A:
Q: 9. What is the mass of a 10.0 lb. bag full of potatoes? 10. Find the force (N) on a 3000 kg car…
A: (9) Given data : Pound mass of bag of potatoes = 10.0 lb…
Q: 5. How much force would be required to slow a 400 kg car from 45 m/s to 27 m/s in 3 s? *
A:
Q: A crate (100 kg) is in an elevator traveling downwards and slowing down at 6 m/s. Find the normal…
A: Take the upward direction to be positive. The forces acting on the crate are the weight of the crate…
Q: *84. ao A train consists of 50 cars, each of which has a mass of 6.8 × 10° kg. The train has an…
A: The diagram will be, ΣFx=Tcoupling =mNa =Nma
Q: Determine the tension in the rope using Newton's 2nd Law. Hint: it is NOT 20 lb. WA = 20 Ib W = 20…
A: Given data The weight of block A is WA = 20 lb = 88.96 N The weight of block B is WB = 20 lb = 88.96…
Q: 7.25. What force does block A exert on block B in Ans. 15.0 N Fig. 7.13? 6 kg 2 kg 45 N A Figure…
A:
Q: How much force is needed to accelerate a 66 kg skier at 2 m/s2? O 33 N O 132 N O 68 N O 64 N
A: Write the given values with suitable variables. m=66 kga=2 m/s2 Here, m denotes the mass and a…
Q: 5. How long must a force of 100 N act on a 20-kg rocket to increase its speed from 100 m/s to 150…
A: 5) Apply Newton’s second law. Here, F represents the force, m represents the mass, vf represents…
Q: 18. What force does a trampoline have to apply to a 45.0-kg gymnast to accelerate her straight up at…
A:
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- 2. A woman stands on a weighing scale while riding in an elevator. When the elevator is at rest, the scale reads 125 Ibs. What will be the reading of the scale when the elevator accelerates (a) Upward at 4 ft/s?? (b) Downward at 4 ft/s??1. A force F=100 N is acting on an object of mass m=10 kg. The force makes an angle of 10° with the x-axis. Calculate the acceleration of the 9.85 m/s 8.69 m/s object. A в 7.52 m/s D 6.34 m/s 2. A 1000 kg object is rising. Its speed is increasing at 3 m/s. The force on the object is: A 1000 N B 3000 N 9800 N D 12800 N 3. A 16 kg object is initially at rest. A constant force of 8.0 N is exerted for 4 s on that object. The change in speed of this object will be 2.0 m/s 6.0 m/s 0.5 m/s 4.0 m/s A B D6:50 PM Wed Apr 5 < = ☹ AA UI 3. A rocket has a mass of 1.00 x 105 kg. Its engines develop a thrust of 2.50 x 106 N, what is the acceleration of the rocket? 4. A car is travelling on a level highway at a speed of 15 m/s. A breaking force of 3,000 N brings the car to a stop in 10 s. What is the mass of the car? G 5. Find the force needed to accelerate a 50 kg crate up a 30.0° incline at a rate of 1.2 m/s². 6. A 1200 kg elevator is lowered at a constant velocity. Find the tension in the cable. 7. Two 4.0 kg masses are pulled by 2.5 kg mass on a horizontal air track. What is the acceleration of the system? Find the tension between the two 4.0 kg masses. 8. Two forces pull a 7.00 kg object: 20.5 N East and 32.0 N 67.5° South of East. Find the force needed to keep the object stationary. 1.2m /12 Fnet =ma_boN Fapp aut kg P20 Unit B Review √30° F₁₂=m-a=√ 37% a n 1 of 3
- 5. A kid (10 kg) sits on a moving Ferris wheel (diameter = 50 m) at a constant speed of 5.3 m/s. What is the supporting force the kid feels from the Ferris wheel when he passes the lowest point? (g-9.8 m/s²) a) 86.8 N b) 109 N c) 75.5 N d) 11.2N KO6. Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. In one test, this gun accelerates a 5.0-kg projectile from rest to a speed of 4.0 × 10' m/s. The net force accelerating the projectile is 4.9 × 10° N. How much time is required for the projectile to come up to speed?5. An old rope can now only safely suspend 120 kg. When the rope is tied to a beam, it hangs down with a vertical length of 12.0 m. Calculate the minimum time required for an 85 kg person starting from rest to climb the entire length of the rope without breaking it. T
- 5. The measured velocity (m/s) for various times for the two wagons are given in the below table. Using Excel to graph the data, and based on the slope of velocity vs. time graph, the acceleration (m/s²) of the two-wagon system is: v(m/s) t(sec) 0.5 0.96 1 1.76 1.5 2.65 2 3.49 2.5 4.34 3 5.113. A boy sits on a tire swing that is attached to a rope. The rope passes over a pulley fastened to the ceiling, and then passes back down to the boy's hands. If the weight of the boy plus the tire is w, what is the force with which the boy must pull on the free end of the rope to support the tire?6. A truck dealer wants to suspend a 4000-kg truck as shown for advertising. The distance b= 15m, and the sum of the lengths of the cables AB and BC is 42 m. Points A and C are at the same height. What are the tensions in the cables? -40 m-
- Vmax In a laboratory experiment, a sphere of diameter 8.0 mm is released from rest at t = 0 at the surface of honey in a jar, and the sphere's downward speed v when it travels in the honey is found to be given by v = Vmax (1 - e-t/T), where 0.040 m/s and T = 0.50 s. (a) Obtain an expression for a(t). (b) Draw graphs for v(t) and a(t) for the time interval 0 to 2.0 s. (c) Obtain an expression for x(t), choosing the positive x axis as downward, and draw the graph for this func- tion. (d) Use your x(t) graph to determine the time interval needed for the sphere to reach the bottom of the container if the surface of the honey is 0.10 m above the bottom of the jar. ... =7. A 105 kg scaffold is 5.20 m long. It is hanging with two wires, one from each end. A 560 kg box sits 1.30 m from the left end. What is the tension in the left hand side wire?(g = 9.8 m/s2)5. A skier wishes to build a rope tow to pull herself up a ski hill that is inclined 15° with the horizontal. Calculate the tension needed in the rope to give the skier's 54 kg body an acceleration of 1.2 m/s². Ignore friction.