What does Newton's 1st Law of motion state?

An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force; the law of intertia.

The acceleration of an object increases with increased force, decreases with increased mass, and is in the same direction as the force.

For every action, there is an equal and opposite reaction.

The force of gravity acts between all masses in the universe.

What does Newton's 3rd law of motion state?

When one object exerts a force on another object, the second object exerts an equal and opposite force on the first object.

An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

The total momentum of a closed system is constant if no external forces are acting on it.

What does Newton's 2nd law of motion state?

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force; the law of inertia.

For every action, there is an equal and opposite reaction.

The force of gravity acts between all masses in the universe.

A car accelerates from rest on a straight road. What does the car's acceleration depend on?

Its mass and the force applied to it

What happens to the speed of a skydiver as they fall freely under the influence of gravity before opening their parachute?

It first increases, then decreases

You apply 100 N of force to a 50 kg box and it begins to accelerate. How would the acceleration change if the mass was tripled?

The acceleration would decrease to one-third of its original value.

The acceleration would increase to twice its original value.

The acceleration would remain the same.

Forces & Motion Study Guide

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-PS2-2, MS-PS2-1, MS-PS2-4

+3

Standards-aligned

Sarah Van Denend

Used 3+ times

FREE Resource

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The gravitational force exerted on an object.

acceleration

weight

gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

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Forces & Motion Study Guide

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A measure of the change in velocity during a period of time.

The forces TWO objects apply to each other.

A region of space that has a physical quantity (such as a force) at every point.

An attractive force that exists between all objects that have mass.

When colliding objects bounce off each other.

A contact force that resists the sliding motion of two surfaces that are touching.

The gravitational force exerted on an object.

A push or pull on an object.

A push or pull on one object by another object that is touching it.

Force of attraction between any two objects with mass, pulling them towards each other.

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