(A) Topic 3 - Lesson 1*

Front

What is the formula for calculating power?

Back

Power = \frac{Work}{Time}

Front

In scientific terms, you do work any time you ______ a force on an object that causes the object to ______ in the direction you exerted the force.

Back

Exert, move

Front

Choose one way someone could increase their POWER if they have one hour to shovel snow.

Back

Shovel the whole driveway AND the neighbor's in the hour

Front

Energy is the ability to do ______ or cause ______.

Back

Work, Change

Front

If an object is in motion what happens to its position relative to other objects?

Back

The Position Changes

Front

What is the definition of work in physics?

Back

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

Front

What unit is used to measure power?

Back

The unit of power is the Watt (W).

Front

How can you increase the amount of work done?

Back

By increasing the force applied or the distance over which the force is applied.

Front

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

Back

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

Front

What happens to power if the time taken to do work is decreased?

Back

Power increases.