4. A 12 N object is attached vertically by a string to a frictionless car that runs along a level track. The car with mass m kg covers a distance of 1.25 m in 5.0 s after it starts from rest. Find the final speed of the car. A. 1.6 m/s B. 2.8 m/s C. 3.6 m/s D. 4.8 m

Q: You drop a 1.60 kg book to a friend who stands on the ground at distance D = 10.0m below. Your…

A:

Q: A car's brakes do work to stop a car. Suppose a car is moving at 18 m/s and it has a mass of 2100…

A: Given : speed of car, u = 18 m/s Mass of car = 2100 kg Frictional force = 550 N

Q: 26. An 80.0-kg skydiver jumps out of a balloon at an alti- tude of 1 000 m and opens his parachute…

A: (a)Without parachute, the acceleration is,

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A: Mass of car: m = 100 kg Initial speed of car = 0 m/s Initial height of car: h = 30 m Final height of…

Q: When starting a foot race, a 68.6 kg sprinter exerts an average force of 704 N backward on the…

A: Given: The mass of sprinter (m) = 68.6 kg. Force exerted F = 704 N. Time (t) = 0.813 s.

Q: 2. Tarzan, whose weight is W = 688 N, swings from a vine of length L = 18 m. He starts his swing…

A: there are 2 parts of the given question solution of the both question given in below step.

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A:

Q: 7) A bob attached to a cord is moved to the right where its vertical position is 1.05 cm above the…

A: Given data: Angle with the vertical, θ=-80 Vertical position, x=1.05 cm=0.0105 m Initial speed,…

Q: 1. A frictionless roller-coaster is given a maximum possible initial speed vo= 6 m/s when it is at…

A: Since there is no friction the total mechanical energy remains conserved i.e, it is small at all…

Q: A skier is sliding downhill at 7 m/s when she reaches an icy patch on which her skis move freely…

A: Let v be the final velocity at the bottom of the icy patch of the skier. The given initial velocity…

Q: You drop a 1.50 kg book to a friend who stands on the ground at distance D= 12.0 m below. Your…

A: Given: D=12.0 m d = 1.80m m = 1.5kg

Q: A stunt performer swings on a 30.5 m long vine initially inclined at an angle of 35.0° with the…

A: Consider the diagram for the stunt performer on the swing as follows.

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A:

Q: 8. A 0.2 kg ball is thrown upward with and initial speed of 10 m/s. a. What is the force acting on…

A:

Q: A 1,000-W motor powers a hoist used to lift cars at a service station. (a) How much time would it…

A: Power P=1000W Mass of the car m =1100 kg Height h= 3m

Q: 7. Indiana Jones, who is 75.0 kg, starts from rest and slides down a stiff rope that exerts a…

A: (a) According to the conservation of energy, 12kx2=12mv2kx2=mv2v=kx2m Substitute the values, to find…

Q: A student drops a water balloon out of a dorm window 26 m above the ground. What is its speed when…

A: As per guidelines I am answering only First question. For answers of remaining questions please post…

Q: On a straight 1.0 km track, a race car accelerates from rest to its top speed through 325 m [W] at…

A: x = 1 km = 1000 m x1 = 325 m v1,i =  0 m/s a1 = 3.5 m/s2 a2 = -1.9 m/s2

Q: g particle has a speed of 5.0 m/s at point A and kinetic energy of 8.0 J at point B.

A:

Q: A ski jumper starts from rest 47.5 m above the ground on a frictionless track and flies off the…

A: Let the initial and final velocity of the ski jumper are v1 and v2. Let the mass of the ski jumper…

Q: A 11 kg object begins by moving at a speed of 2 m/s. A force of 33 N is then applied to it while the…

A:

Q: A skier is sliding downhill at 7 m/s when she reaches an icy patch on which her skis move freely…

A: Given that: Initial speed of the skier is  u = 7 m/s Difference of altitude of top and bottom of the…

Q: You drop a 1.40 kg book to a friend who stands on the ground at distance D = 13.0 m below. Your…

A:

Q: A toy cannon uses a spring to project a 5.30-g soft rubber ball. The spring is originally compressed…

A:

Q: A 1,000-W motor powers a hoist used to lift cars at a service station. (a) How much time would it…

A:

Q: 42. mmh Consult Conceptual Example 9 in preparation for this problem. The drawing shows a person…

A: The person starts from rest, so the initial speed is zero.   From the figure, take path 1 from the…

Q: A 1200 kg car starts from rest and travels 100 m in a time of 10 seconds. m A) What is the…

A: Answer:-  Given  Mass of a car ( m) = 1200 kg  Distance travelled (S) = 100 m  Time (t) = 10 s…

Q: A 0.300 kg potato is tied to a string with length 2.50 m, and the other end of the string is tied to…

A: mass, m = 0.25 kg length, L =  2.5 m

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A: Let the force is denoted by F and the power is denoted by P. Evaluate the speed (v) of the box by…

Q: A skateboarder starts up a 1.0-m-high, 30° ramp at a speed of 8.2 m/s. The skateboard wheels roll…

A: Given, height from where skate board start (h) = 1 m Speed = 8.2 m/s

Q: A vertical massless spring with spring constant of 740 N/m, is attached to a table and is compressed…

A: Given data:  Spring constant (k) = 740 N/m Compression in spring (x) = 0.200 m Mass of the ball (m)…

Q: 1. An object is thrown horizontally from the top of a building 4 m above the ground. Is hits the…

A:

Q: A motorcyclist is coasting with the engine off at a steady speed of 18.0 m/s but enters a sandy…

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Q: A ski jumper starts from rest 52.5 m above the ground on a frictionless track and flies off the…

A: Given: A ski jumper starts from rest 52.5 m above the ground on a friction less track and flies off…

Q: hat all frictional forces may be ignored. A) What

A: Givenm=1400 kgP=42 hpv=10 m/s

Q: A 3-kg block slides along a horizontal surface with an initial speed of 7 m/s. The coefficient of…

A: mass = 3 kg initial speed = 7m/s coefficient of friction = 0.5 d = 4 m angle of ramp = 40 degree

Q: 2. A person drives 120 km [N 32° W] in a car to a friend's place to visit and then drives 150 km [W…

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Q: 2. A 50.0 kg roller coaster car is launched, from ground level, at 20.0 m/s. How fast will it be…

A: Given Mass or roller = m = 50.0 kg Speed at ground level = u = 20.0 m/s Height of the top from…

Q: A child, m = 25.0 kg, swings from a rope, L = 8.57 m, which hangs above water, d = 1.1 m, when…

A:

Q: A 1200 kg car starts from rest and travels 100 m in a time of 10 seconds. m A) What is the…

A:

Q: A stunt performer swings on a 34.0 m long rope initially inclined at an angle of 40.0° with the…

A: a) Using conservation of energy change in potential energy = change in kinetic energy mgl(1-cosθ) =…

Q: A ball of mass 522g starts at rest and slides down a frictionless track, as shown below. It leaves…

A: Given: Mass of ball, m=522 g. Height of ball reached after falling, h2=1.10 m Ball strikes the…

Q: 37. A truck of mass 900 kg is travelling along a straight level road against a constant resistance…

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Q: com/course.html? A 0.280 kg potato is tied to a string with length 1.50 m, and the other end of the…

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Q: A toy cannon uses a spring to project a 5.32-g soft rubber ball. The spring is originally compressed…

A: The ball moves from point A and leaves the barrel of the cannon at point C is shown below .

Q: You drop a 2.20 kg book to a friend who stands on the ground at distance D = 11.0 m below. Your…

A:

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.