Work and Energy

What is the work done if a 25 N force parallel to the surface pushes a box for 10 meters? 

• 0.25 J

• 25 J

• 250 J

• 2.5 J

If the man pulls the sled with a 10 N force, what is the horizontal component of force? Refer to chapter 4, mechanics if you do not remember how to resolve a force into its components.

• 8.66 N

• 5.00 N

• 300 N

• 3.00 N

Tags

NGSS.MS-PS2-2

How much work does the man do if he pulls the sled with a force of 10 N for 10 meters.

• 100 J

• 30.0 J

• 86.6 J

• 50.0 J

Tags

NGSS.MS-PS3-5

Which one is the energy due to motion?

• Kinetic energy

• Potential energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the kinetic energy of a 10 kg object that is in motion with a velocity of 3 m/s?

• 150 J

• 30 J

• 45 J

• 15 J

Tags

NGSS.MS-PS3-1

Which type of energy is the stored energy that could be used to do work?

• Potential energy

• Kinetic energy

Tags

NGSS.MS-PS3-2

What is the potential energy of a 10 kg object 2 meters above the ground?

• 5.00 J

• 98.1 J

• 196 J

• 20.0 J

Tags

NGSS.MS-PS2-4

What is the potential energy of a spring with stiffness of 100 N/m if compressed for 0.1 m?

• 0.50 J

• 5.00 J

• 1.00 J

• 10.0 J

Conservative system ...

• is one that does lose energy

• is one that does not lose energy

Tags

NGSS.MS-PS3-5