Energy, Work & Power with a bit of motion!

SI units of force are

• Newtons

• grams

• joules

• meters

SI units for work done are

• Newtons

• joules

• meters

• seconds

if you push a cart with a force of 80 N for 4 m... how much work have you done?

• 320 J

• 32 J

• 320 N

• 32 N

What is the formula we can use to calculate work done?

• Force = work x distance

• Distance = force x work

• Work = force x distance

• Work = force x mass

Jemima kicks a ball with a force of 30N to George, who is 15m away across the park. How much work was done to the ball?

• 25 J

• 150 J

• 100 J

• 75 J

If 40N of force is applied to Abigail's 20 kg go-cart over a distance of 500 metres, how much work is done?

• 10 000 J

• 400 000 J

• 40 000 J

• 20 000 J

If the mystery machine moves 100 metres how much work is done? Resolve the forces first!

• 130,000,000 J

• 70,000 J

• 100,000 J

• 30,000 J

When you stretch a rubber band, you are storing __________ energy.

• kinetic

• elastic potential

• neither of the above

• both of the above

When this pendulum swings, at which point is potential energy at its greatest?

• 1

• 2

• 3

• 4

Energy due to motion is also known as ____________ energy.

• Gravitational Potential

• Thermal

• Kinetic

• Friction