WORK & ENERGY-GROUP PRACTICE

If you push a cart with a force of 60 N for 2 m... how much work have you done?

• 120 J

• 30 J

• 120 N

• 30 N

Units of work are...

• Newtons

• Grams

• Joules

• Meters

What is the formula for work?

• Force = work × distance

• Distance = force × work

• Work = force × distance

• Work = force × mass

Fred kicks a ball with a force of 20N to George, who is 5M away.

How much work was done to the ball?

• 25 J

• 100 J

• 4 J

• 75 J

Two factors that determine work are...

• Force

• Mass

• Velocity

• Distance

Units of force are...

• Newtons

• Grams

• Joules

• Meters

Work is

• having a job

• movement

• energy transfer

• energy transfer to an object

The ( ) the force the ( ) work is done

• less, more

• smaller, more

• bigger, more

• bigger, less

if something is shifted a long way then there is ( ) work is being done

• less

• more

• same

• none

If the object does not move then what is happening

• nothing

• work

• power

• no work is being done on the object