Test: inertia
Description: inertia
Subject: Science
Subtopic: Physics
Topic: Modern Physics
Grade: 8
Instructions: Answer all questions to get your test result.

Question 1 of 10
Any force that is keeping an object moving in a circle is know as


centripetal force


a vector
Question 2 of 10
Acceleration is

a change in force over time

the speed of an object

a change in velocity over time

how fast an object moves
Question 3 of 10
When one object exerts a force on another object, the second object exerts a force back on the first object that is

equal in size and in the same direction

unequal in size and opposite in direction

unequal in size and in the same direction

equal in size and opposite in direction
Question 4 of 10
Balanced forces act on

unbalanced objects

balanced objects

two different objects

the same object
Question 5 of 10
A push or pull is called




Question 6 of 10
James combines all the forces acting on a tennis ball. He is finding the

frictional force

gravitational force

inertia force

net force
Question 7 of 10
Janet is sliding a box across the floor. What does she need to know to calculate the force on the box?

friction and gravity

acceleration and friction

mass and acceleration

mass and inertia
Question 8 of 10
Inertia is the resistance of an object to a change in its



balanced force

Question 9 of 10
A soccer player kicks a ball that is at rest. What do you predict will happen?

The ball will accelerate in the direction opposite the applied force.

The ball will lose momentum.

The ball will not move.

The ball will accelerate in the same direction as the applied force.
Question 10 of 10
According to Newton's second law of motion, force equals mass time