WorksheetsForces Unit Review
Total questions: 20
Worksheet time: 15mins
Name
Class
Date
1.
What is the net force on the box shown below?
a)
a. 10 N to the left
b)
b.10 N to the right
c)
c. 60 N to the left
d)
d. 50 N to the right
2.
When you slide a box across the floor what force must your push be stronger than?
a)
a. support force
b)
b. friction force
c)
c. gravity
d)
d. air resistance
3.
This test paper is sitting at rest on your desk. Which of the following statements best describes this situation?
a)
a. There are no forces acting on your paper.
b)
b. Your paper pushes on the desk only.
c)
c. The desk pushes on your paper only
d)
d. The forces acting on the paper are balanced.
4.
A falling object is pulled down by the earth. The earth is pulled up toward the object. Why doesn’t the earth move?
a)
a. Only the earth has gravity.
b)
b. The Earth has a very large mass and a small acceleration.
c)
c. The Earth has a very small mass and a large acceleration
d)
d. Air resistance gets in the way.
5.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first? (air resistance is present)
a)
a. the cannon ball
b)
b. the baseball
c)
c. the hit the ground at the same time
d)
d. the ball with the larger vol
6.
Which of the following is an example of a non contact force?
a)
a.gravity
b)
b. air resistance
c)
c. friction
d)
d. tension
7.
One ball rolls along a shelf at a steady rate. A second ball rolls off the shelf and gains speed as it falls in a curved path. Which must have an unbalanced force acting on it?
a)
a. the balling the ball that is rolling along the shelf
b)
b. the ball that is falling
c)
c. both balls
d)
d. neither balls
8.
What describes the tendency of a moving object to continue moving at the same velocity?
a)
a. acceleration
b)
b. velocity
c)
c. speed
d)
d. inertia
9.
In baseball, a fly ball happens when a player hits the ball high into the air. The player on the other team must wait for it to come down to catch it. Imagine that there were suddenly no gravity on Earth. How would a fly ball be different?
a)
a. The fly ball would not go as high.
b)
b. The fly ball would stick to the bat.
c)
c. The fly ball would never come down
d)
d. The fly ball would come down more slowly.
10.
A cup of water is left on the roof of a car. When the car begins to move, the cup does not move forward with the car. Instead, it falls off. What happened to the cup of water?
a)
a. The cup accelerated backward as the car accelerated forward, so the cup fell off the car.
b)
b. An unbalanced force caused the cup to move with the car, but gravity caused it to fall.
c)
c. The upward force on the cup increased as the car moved forward, so the cup fell.
d)
d. Inertia kept the cup from moving while the car moved forward.
11.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
12.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
13.
If these boys are pulling with the same amount of force. What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
14.
What happens when two forces act in the same direction?
a)
They cancel each other out.
b)
The stronger one prevails.
c)
Their strengths are added.
d)
Their sum divided by the two is the total force.
15.
What is the net force on the block? (click on the words to view the picture)
a)
5 Newtons up
b)
5 Newtons down
c)
15 Newtons up
d)
15 Newtons down
16.
Which of the following objects has the least acceleration?
a)
a. an empty shopping cart pushed with a hard force
b)
b. a full shopping cart pushed with a hard force
c)
c. an empty shopping cart pushed with a light force
d)
d. a full shopping cart pushed with a light force
17.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced
a)
12 N Right No
b)
4 N Left No
c)
12 N Right Yes
d)
4 N Left Yes
18.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass.
a)
velocity
b)
gravity
c)
net force
d)
distance
19.
What is Newtons 2nd law?
a)
equal&opposite force
b)
law inertia
c)
f=ma
20.
This type of force is when one object pushes or pulls on another object by touching it
a)
contact
b)
gravity
c)
friciton
100 %
