Unit 1 Motion & Force Review

1.) An object with a mass of 25.5 kg. accelerates 7.8 m/s² when an unknown force is applied to it. What is the amount of force?

• 198.9 N

• 189.9 N

• 199.8 N

Tags

NGSS.MS-PS2-2

A student pushes a box to right with a force of 10N while a young boy pushes the box to the left with a force of 8N. What is the sum of all forces on the box? 

• 18N left
• 18N right
• 2N right
• 2N left

Tags

NGSS.MS-PS2-2

The masses of four objects are given in this table. If all objects are struck with the same amount of force, which one will have the greatest acceleration?

• Object 1
• Object 2
• Object 3
• Object 4

Tags

NGSS.MS-PS2-2

The greater the mass of an object, the greater the ___________ according to Newton's 1st Law.

• force

• friction

• momentum

• inertia

What is true about the relationship between mass and momentum.

• The less mass an object has, the more momentum it will have.

• The more mass an object has, the less momentum it will have.

• The more mass an object has, the more momentum it will have.

• Mass has nothing to do with momentum.

Newton's _____ Law of Motion means that for every force there is a reaction force that is equal in size, but opposite in direction.

• First
• Second
• Third
• Fourth

Tags

NGSS.MS-PS2-1

When you drop a hammer and a feather on the moon what will happen? There is no air on the moon.

• They will hit at the same time

• The hammer will hit first

• The feather will hit first

Tags

NGSS.MS-PS2-4

A baseball catcher throws a ball vertically upward and catches it in the same spot as it returns to the mitt. At what point in the ball’s path does it experience zero velocity and nonzero acceleration at the same time?

• the instant it leaves the catcher’s hand

• midway on the way up

• at the top of its path

• the instant before it arrives in the catcher’s mitt

Tags

NGSS.MS-PS2-4

What is the NET FORCE of this diagram?

• 17 N, right

• 17 N, left

• 23 N, right

• 12 N, up

Tags

NGSS.MS-PS2-2

Work of 2000 J is required to push an object 1.5 km. What is the force?

• 2.5 N
• 1.3 N
• 1.6 N
• 12 N