Physical Science - Chapter 4 - Work and Energy Math etc.

Two factors that determine work are

• amount of the force, and effort used
• amount of the force, and type of force
• mass, and distance
• amount of force and distance moved

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box ?

• 200 J
• 20.0J
• 2 J
• 200 N

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NGSS.HS-PS3-1

NGSS.HS-PS3-2

The unit or label for work is

• netwons
• joules
• meters
• seconds

if you push a cart with a force of 60 N resulting in 120 J of work.. how far did you move the cart? 

• 7200 m
• 0 m
• 2 N 
• 2 m

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NGSS.MS-PS2-2

If you do 40 joules of work lifting a 10N box, how high is the shelf you move it to.

• 400m
• 4m
• 50m
• 40m

You apply a force of ? to a wheelbarrow and moved it 6 m resulting in 48 J of work. How much force did you do on the dresser?

• 8 N
• 8 J
• 288 J
• 288 N

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NGSS.MS-PS3-5

Roger Federer’s tennis ball has a mass of 0.3 kg. If he holds the ball above the ground at a height of 2.0 m to serve, what is its gravitational potential energy (GPE)?

• 5.88 J
• 0.6 J
• 6.67 J
• 0.15 J

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NGSS.MS-PS2-4

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A leopard with a mass of 55.00 kg climbs 12.0 m up a tree. What is its GPE?

• 6,468 J
• 660 J
• 4.58 J
• 0.22 J

You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. What is the KE of the ball?

• 900 J
• 1800 J
• 60 J
• 30 J

Tags

NGSS.MS-PS3-1

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The acceleration of an object due to gravity on Earth is...

• 8.9 m/s²
• 9.8 m/s²
• It depends on the mass of an object
• Equal to its kinetic energy