Concept 4: Work and Power

Multiple Choice

A book weighing 1 N is lifted 2 m.  How much work was done?

• 2 J

• 25 m

• 8 N

• 19.6 J

Multiple Choice

A 1 kg book is lifted 2 m. How much work was done?

• 2 J

• 25 m

• 8 N

• 19.6 J

Multiple Choice

250 J of work are needed to push a box up a ramp.  The force needed to push the box up the ramp is 10 N.  How far up the ramp was the box pushed?

• 2 J

• 25 m

• 8 N

• 19.6 J

Multiple Choice

If 56 J of work energy is required to lift a dumbbell to a height of 7 m, what is the weight of the dumbbell?

• 2 J

• 25 m

• 8 N

• 19.6 J