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


a vector

centripetal force

Question 2 of 10
Acceleration is

how fast an object moves

a change in velocity over time

the speed of an object

a change in force over time
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 opposite in direction

equal in size and in the same direction

unequal in size and in the same direction

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

balanced objects

the same object

two different objects

unbalanced objects
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

gravitational force

net force

frictional force

inertia 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?

acceleration and friction

mass and inertia

mass and acceleration

friction and gravity
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 lose momentum.

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

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