Student Copy of U7 D7 Work and Power Notes

Multiple Choice

You attempt to push a large truck with 15,000 N of force but was unable to move the truck, how much work did you do?

• 1,000 J
• 0 J
• 7,500 J
• 15,000 J

Multiple Choice

In order for any work to be done an object must

• be stationary without any force
• be at rest to do work
• move without any force acting on it
• be acted upon by a force and move in the direction of that force

Multiple Choice

What is one way work, force, an motion apply to everyday life?

• Sitting still while reading a book
• Carrying a heavy backpack without any movement
• Watching a movie without any physical activity
• Pushing a shopping cart involves applying force to create motion, illustrating work in everyday life.

Multiple Choice

How much work does a horse do while oving a wagon 20 meters with a force of 300 Newtons?

• 1200 Joules
• 6000 Joules
• 3000 Joules
• 1500 Joules

Multiple Choice

Tommy does 15 Joules of work to push his pencil 5 cm. How much fore does he use?

• 300 N
• 600 N
• 75 N
• 150 N

Multiple Choice

A man is sitting on a bench with a force of 300 N. How much work has he done?

• 0 J
• 100 J
• 150 J
• 300 J

Multiple Choice

The unit for measuring work is called a(n)

• pascal
• newton
• joule
• watt

Multiple Choice

Power describes the rate at which work is done. What unit is used to express power?

• Newton
• Joule
• Volt
• Watt

Multiple Choice

How much power does it take to kick a soccer ball a distance of 20 meters with 70 Joules of work in 5 seconds?

• 10 Watts
• 14 Watts
• 20 Watts
• 5 Watts

Multiple Choice

Sponge Bob lifted 12 Newtons a distance of 2 meters in 3 seconds. How much work is done and how much power is output?

• Work: 30 Joules, Power: 10 Watts
• Work: 20 Joules, Power: 6 Watts
• Work: 18 Joules, Power: 5 Watts
• Work: 24 Joules, Power: 8 Watts