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by BlastRoom
Practice relating net work to changes in kinetic energy.
#physics
20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
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A net force acts on a moving block over a straight-line displacement. The total net work done on the block is equal to which quantity?
In the equation W_net = ΔKE, what does ΔKE represent for the object?
In the work-energy theorem, net work and kinetic energy are both measured in which SI unit?
The net work done on a moving object is negative. According to the work-energy theorem, what happens to the object?
A 3.0 kg cart speeds up from 2.0 m/s to 6.0 m/s along a straight track. How much net work is done on the cart?
A 0.80 kg ball slows from 12 m/s to 5.0 m/s while moving horizontally. What is the net work done on the ball?
A 1200 kg car speeds up from 10 m/s to 25 m/s. What net work is done on the car?
A 5.0 kg sled slows from 8.0 m/s to 3.0 m/s on level snow. How much net work is done on the sled?
A 65 kg skateboarder speeds up from 1.0 m/s to 4.0 m/s. What is the net work done on the skateboarder?
A 2.5 kg lab cart speeds up from 4.0 m/s to 9.0 m/s. How much net work is done on the cart?
A 2.0 kg puck speeds up from 3.0 m/s to 9.0 m/s over 6.0 m. What is the magnitude of the average net force on the puck?
A 1000 kg car slows from 30 m/s to 10 m/s over 80 m. What is the magnitude of the average net force on the car?
A 0.50 kg ball speeds up from 4.0 m/s to 10 m/s while a net force acts over 3.0 m. What is the magnitude of the average net force?
A 4.0 kg box slows from 6.0 m/s to 2.0 m/s over 5.0 m. What is the magnitude of the average net force on the box?
A 1500 kg truck speeds up from 5.0 m/s to 15 m/s over 25 m. What is the magnitude of the average net force on the truck?
A 0.20 kg toy car slows from 8.0 m/s to rest over 2.0 m. What is the magnitude of the average net force on the toy car?
A 2.0 kg box is pushed 5.0 m across a rough level floor at a constant speed of 1.5 m/s. Which statement matches the work-energy theorem?
A 70 kg cyclist pedals along a level road at a constant 6.0 m/s for 20 m. Which statement best follows from W_net = ΔKE?
A 10 kg crate is pulled in a straight line at a steady 3.0 m/s. What can be concluded about the work done by all forces together?
A puck enters a section of ice at 4.0 m/s and leaves it still moving at 4.0 m/s. One force does +18 J of work on the puck. Which statement must be true?
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20 questions
