# Motion And Forces Pre-test

9 Questions | Total Attempts: 379  Settings  Pre Test

• 1.
Name the law of motion: A rock is standing still. It moves when someone pushes it
• A.

Newton's first law

• B.

Newtom's second law

• C.

Newton's third law

• 2.
What is the equation for speed
• A.

S=d+t

• B.

S=d(t)

• C.

S=d/t

• 3.
What is inertia?
• A.

The amount of matter in an object

• B.

The tendency of an object to resist change in its motion

• C.

The tendency of an object to change when it's stable

• 4.
The law of conservation of momentum states...
• A.

The momentum is caused by forces combined

• B.

The momentum changes due to balanced forces

• C.

The total momentum of a group of objects remains constant unless outside forces act on the group.

• 5.
An object's velocity changes due to balanced forces
• A.

True

• B.

False

• 6.
When does the force of gravity exist?
• A.

Between a weightless object and an object that has mass

• B.

Between two weightless objects

• C.

Between two objects with mass

• 7.
What does a barometer measure?
• A.

The temperature

• B.

The atmospheric pressure

• C.

The amount of rain water

• 8.
Buoyant force changes with depth.
• A.

True

• B.

False

• 9.
If an object's weight is more than its buoyant force, the object...
• A.

Floats

• B.

Sinks

• C.

Turns

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