Work and Power FLASHCARD

Front

What is the formula for calculating power?

Back

Power (P) is calculated using the formula P = Work (W) / Time (t).

Front

If a force of 750 N moves an object 50 m in 75 seconds, what is the power output?

Back

The power output is 500 W.

Front

How do you calculate work done when a force is applied over a distance?

Back

Work (W) is calculated using the formula W = Force (F) x Distance (d).

Front

What is the unit of power in the International System of Units (SI)?

Back

The unit of power is the Watt (W).

Front

If a net force of 35 N is used to push a box 10 meters in 5 seconds, what is the power used?

Back

The power used is 70 watts.

Front

What type of work is done when a force causes an object to move in the direction of the force?

Back

This is an example of positive work.

Front

What happens to work done as the distance decreases, assuming force remains constant?

Back

As distance decreases, work decreases.

Front

If 150 Joules of work is needed to move a box 10 meters, what is the net force applied?

Back

The net force applied is 15 N.

Front

What is the relationship between work, power, and time?

Back

Power is the rate at which work is done over time.

Front

What is the significance of a negative work value?

Back

Negative work indicates that the force applied is in the opposite direction of the displacement.