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FORCE AND MOTION

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

Which of the following is NOT TRUE about force?

a)

Force is scalar quantity

b)

Force unit is Newton = kg.m/s2

c)

Force creates motion

d)

Force represents an object’s interaction with its environment

2.
What is gravity?
a)
A force
b)
Energy
c)

A push or a pull

d)
All of them
3.

Which kind of force(s) will cause a change in an object's motion, will not cause a change in an object's motion, and the sum of all forces acting on the object?

a)

contact force, net force, balanced force

b)

non-contact force, net force, unbalanced force

c)

balanced force, unbalanced force, net force

d)

unbalanced force, balanced force, net force

4.

Which of the following statements is NOT true about what forces can do to an object?

a)

causes an object to STOP from moving

b)

causes an object at rest to START MOVING  (it can speed up or slow down the object)

c)

causes an object to CHANGE ITS DIRECTION

d)

causes a moving object to CONTINUE MOVING

5.

Why do you think space crafts are able to move up into space without falling back?

a)

Because it is heavier than the gravity.

b)

Because it has wings to fly.

c)

Because it has a machine that moves with a rapid speed.

d)

Because the ground pushes it upwards.

6.

A ball rolls down from the top of a grassy hill, reaches the bottom of the hill, continues to roll, and then starts to slow down and comes to a stop. What forces caused this ball's motion?

a)

Frictional force caused the ball to roll down the hill, but air resistance caused the ball to slow down and stop.

b)

Magnetic force caused the ball to roll down the hill, but gravity caused the ball to slow down and stop.

c)

The force of the hill caused the ball to roll down it, but gravity caused the ball to slow down and stop.

d)

Gravity caused the ball to roll down the hill, but frictional force caused the ball to slow down and stop.

7.

When we stand on a surface, the force of gravity is opposed by the reaction force, also known as the

a)

frictional force

b)

normal force

c)

tension force

d)

applied force

8.
Who is the scientist that studied gravity a long time ago? (He apparently got an apple falling on his head)
a)
Albert Einstein
b)
Isaac Newton
c)
Charles Darwin
d)
Stephen hawkins
9.
What is buoyant force?
a)
An upward force exerted by fluids on an object.
b)
An downward force exerted by fluids on an object.
10.

A force that is applied to an object either it was done by a person or another object.

a)

Applied Force

b)

Friction Force

c)

Tension Force

d)

Normal Force

11.

A force that is passed thru strings, ropes, cables, wires when they are being pulled apart by opposing forces.

a)

Applied Force

b)

Friction Force

c)

Tension Force

d)

Normal Force

12.

Which of these involves a contact force?

a)

A planet in orbit around a star

b)

A skydiver falling through the air

c)

Electrons attracted to the nucleus of an atom

13.
What is the main difference between contact forces and non-contact forces?
a)
Contact forces push objects away from each other, while non-contact forces pull objects towards each other
b)
Contact forces act over a distance, while non-contact forces require direct physical contact
c)
Contact forces require direct physical contact, while non-contact forces act without any direct physical contact
d)
Contact forces are stronger than non-contact forces
14.

Which of the following objects will experience an unbalanced force?

a)

A bike rider on a smooth and level road, pedaling at a constant rate.

b)

A train pulling on another train, each with the same amount of force.

c)

A chair sitting on the floor with balanced forces acting in opposite directions.

d)

A ball rolling across the floor with friction acting in the opposite direction.

15.
Which could be an example of a balanced force?
a)
An asteroid moving at a constant speed through space 
b)
A car accelerating from a stop sign
c)
A box of dishes falling from a counter 
d)
A rocket taking off 
16.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
17.
In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N. What is the resultant force?
a)
50N to the left.
b)
350N to the left.
c)
350N to the right.
d)
50N to the right.
18.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
19.
An airplane is travelling North through the sky at a constant speed when turbulence causes it to take a different route, changing its direction. Explain the forces at work on this plane.
a)
Unbalanced, because the plane is moving forward, not backwards
b)
Unbalanced, because the speed is constant and there is a change in direction
c)
Balanced, because the plane is not falling to a lower altitude
d)
Unbalanced, because the plane is in motion
20.
What will the net force on the soccer ball be?
a)
50 N to the left
b)
50 N to the right
c)
200 N to the left
d)
200 N to the right