Physical Science Final Review

A picture is hanging on a wall and does not move.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

This law is often called "the law of inertia."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Newton's 3rd Law states that for ever action there is an equal and opposite ________.

• reaction

• satisfaction

• fraction

• transaction

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

Unit of mass

• m/s 2
• m/s
• newtons
• kg

Tags

NGSS.MS-PS2-4

A force of 250 N is applied to an object that accelerates at a rate of 5 m/s². What is the mass of the object? To solve this problem you must do -

• 250 ÷ 5

• 5 ÷ 250

• 250 x 5

Tags

NGSS.MS-PS2-2

A 50 kg skater pushed by a friend accelerates 5 m/s². How much force did the friend apply? To solve this problem you must do -

• 50 ÷ 5

• 5 ÷ 50

• 50 x 5

Tags

NGSS.MS-PS2-2