Unit 5 Energy test

Which is needed to determine the amount of gravitational force between two objects?

• distance and mass

• weight and time

• area and weight

Tags

NGSS.MS-PS2-4

A student drops a bowling ball and an apple from a third-story window. Both objects hit the ground at the same time. From the experiment, the student should conclude that

• the apple weighs more than the bowling ball

• more air friction is acting on the apple than on the bowling ball

• gravity pulls on both objects, causing them to fall at the same time.

Tags

NGSS.MS-PS2-4

As the product of two objects' masses increases, the pull of gravity

• Increases
• Decreases
• Stays the same

Tags

NGSS.MS-PS2-4

This FORCE pulls things.  It PULLS things into orbit around the sun. 

• Newton
• gravity
• weight
• path

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

if mass of the sun decreases, the gravitational force of the sun will

• a. increase

• b. no change

• c. decreases

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2

1. Paula pushes a skateboard and it gradually slows down to a stop. Why does the skateboard come to a stop?

• Gravity alone stops the skateboard.

• Paula did not push the skateboard with enough force.

• The skateboard has positive acceleration.

• Friction and gravity slow the skateboard.

Tags

NGSS.MS-PS2-2

1. What happens when the forces applied to an object at rest produce a net force of zero?

• The object will move at constant speed.

• The object will have positive acceleration.

• The object will have negative acceleration.

• The object will not move at all.

1. What is the net force on the object shown in the graphic?

• 50 N to the right

• 100 N to the right

• 150 N to the left

• 250 N to the left

What is the net force?

• 10 N
• 0 N
• 25 N
• 1 N

Tags

NGSS.MS-PS2-2

Which statement describes a difference between an object's kinetic energy and its potential energy.

• An objects kinetic energy depends on its mass while its potential energy does not.

• An objects kinetic depends on its speed while its potential energy does not.

• An objects kinetic energy depends on gravity while its potential does not.

• An object's kinetic energy depends on its height above ground while its potential energy does not.