Work, Energy, Power

The ability to do work or cause change:

• work

• energy

• momentum

• power

Energy in the form of motion.

• mechanical energy

• potential energy

• kinetic energy

• momentum

Stored energy in the form of position or condition.

• potential energy

• kinetic energy

• momentum

• mechanical energy

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

• 200 J

• 80 J

• 5 J

• 2000 J

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

• 18 m

• 4 m

• 10 m

• 6 m

Two workers use 100 N of force to move a sofa 2 meters in 2 seconds. How much power is required?

• 100 watts

• 400 watts

• 104 watts

• 50 watts

How much work is being done with 200 N of force over 426 meters?

• 85,200 J
• 45,620 J
• 90,480 J
• 62,329 J

The SI unit for power is...?

• Watts

• Joules

• Newtons

• Metres

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much power did they exert climbing the stairs?

• 400 W

• 1200 W

• 200 W

• 120 W