A 20 kg bike accelerates at 10 m/s2 . With what force was the person pedaling?

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A kid pulls on a rope with 20 newtons of force. The block and tackle system pulls up a 160 newton box. What is the mechanical advantage of the pulley system?

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Determine the momentum of a 60-kg halfback moving eastward at 9 m/s.

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A 20 kg bike accelerates at 10 m/s2 . With what force was the person pedaling?

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A rake is held so that its input arm is 0.4 meters and its output arm is 1.0 meters. What is the mechanical advantage of the rake?

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Carlita’s work output is 3J and work input is 4 J. Calculate the mechanical efficiency.

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A system of pulleys allows a mechanic to lift an 1800 N engine. If the mechanic exerts a force of 600 N on the pulley system, what is the mechanical advantage of the machine?

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A rope is thrown over a beam, and one end is tied to a 300 N bundle of lumber. You pull the free end of the rope 2 m with a force of 400 N to lift the lumber off the ground. How much work have you done?

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What is the mechanical advantage of a lever that has an input arm of 3 meters and an output arm of 2 meters?

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What is the acceleration of a 3 kg rock that is thrown with a force of 18 N?

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What is the mechanical advantage of a lever that requires an input force of 20 N and lifts an object that weighs 60 N?

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A 20 kg bike accelerates at 10 m/s2 . With what force was the person pedaling?

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The fastest train on Earth, the TGV from France, can travel at faster speed than the trains in the United States. During a speed test, the train traveled 800 miles in 2.5 hours. What is its speed?

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Joy’s pulley had output force 60N and Input force 15 N . Calculate the mechanical advantage of his pulley.

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A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters. How long is the ramp?

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A 50 N girl climbs the flight of stairs in 3 seconds. If height of the stairs is 3m, calculate the power.

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How much work is done on a 16 N sack of potatoes when you lift the sack 1.5 m?

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The fastest plane ever made, the Lockheed SR71, was able to travel 2200 miles per hour. Based on this speed, how far could it travel in 3 hours?

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Goldie Goldfish, a speed swimmer, loves to race around the park’s pond, which is 0.5 miles around. If she can swim 20 laps around the track in 2 hours, what is her average speed?

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Pete the Penguin loves to sled down his favorite hill. He starts at 0 m/s at the top of the hill and he hits a speed of 50 m/s after 5 seconds, what is his rate of acceleration?

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Toon Train is traveling at the speed of 10 m/s at the top of a hill. Five seconds later it reaches the bottom of the hill and is moving at 30 m/s. What is the rate of acceleration of Toon Train?

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If it takes 100 N to push a 300 N object up an incline plane, what was the mechanical advantage of the ramp?

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Determine the momentum of 1000-kg car moving northward at 20 m/s.

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The girl lifts a 60 N weight of painting to a height of 0.5 m in 0.75 seconds. Calculate the power.

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A 10 N force pulls to the right and friction opposes 2 N. If the object is 20 kg, find the acceleration.

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A crane lifts a load of steel that weighs 9.3 105 N a distance of 100 m. It takes 5 minutes to complete the task. How much work is done by the crane?

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A 10 meter ramp helps you to move a 500 kg object up 1 meter. What was the mechanical advantage of the ramp?