Work and Power

Front

What is the formula for calculating power?

Back

Power = Work / Time

Front

True or False: Work is done on an object when the object moves in the same direction as the applied force.

Back

True

Front

What do simple machines increase to make work easier?

Back

The distance over which work is done.

Front

True or False: The farther you move an object, the more work you do.

Back

True

Front

Which scenario produces the most power: lifting 10 kg 10 m in 5 seconds or lifting 10 kg 10 m in 10 seconds?

Back

Lifting 10 kg 10 m in 5 seconds produces more power.

Tags

NGSS.MS-PS3-4

Front

Define work in the context of physics.

Back

Work is done when a force causes an object to move in the direction of the force.

Tags

NGSS.HS-PS3-2

Front

What unit is work measured in?

Back

Joules (J)

Front

What is the relationship between work, force, and distance?

Back

Work = Force x Distance.

Front

What is the SI unit of power?

Back

Watt (W)

Front

How does increasing the time taken to do work affect power?

Back

Increasing the time decreases power, as power is inversely proportional to time.