Physics Work and Energy Flashcard

Front

Work done by a 50 N force to push a 10 kg box 3 m across a rough surface?

Back

150 J

Front

A 15 kg object starts from rest and is acted upon by a constant horizontal force that accelerates it at 2.5 m/s². After 4 seconds, what is its final speed?

Back

10 m/s

Front

Change in kinetic energy of a 0.5 kg particle when speed increases from 4 m/s to 6 m/s.

Back

5 J

Front

A 2 kg object moving at 5 m/s has a kinetic energy of:

Back

25 J

Front

A 5 kg box is pushed along a rough horizontal floor for 3 meters with a horizontal force of 40 N, against a friction force of 10 N. What is the net work done on the box?

Back

90 J

Front

An object with a mass of 3 kg is at a height of 20 m above the ground. Taking gravitational acceleration as 9.8 m/s², what is its gravitational potential energy at that height?

Back

588 J

Front

A car in a roller coaster reaches the top of a hill at 25 m with zero speed. Assuming no energy loss, what will its speed be when it reaches the ground level?

Back

22.1 m/s

Front

A 4 kg object has a kinetic energy of 32 J. What is its speed?

Back

4 m/s

Front

Force: 10 N, Mass: 2 kg, Distance: 5 m. What is the work done?

Back

50 J

Front

A 1 kg object moves from point X to point Y, where it speeds up from 2 m/s to 5 m/s. What is the work done on the object during this motion?

Back

10.5 J