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WorksheetsMotion and Forces
Total questions: 25
Worksheet time: 20mins
Judy’s brand new red Lamborghini car travels 280 kilometers in 4 hours. What is its average speed?
(Hint: speed = distance / time)
140 km/hr
280 km/hr
1120 m/hr
70 km/hr
Mary pushes a crate with a force of 50 N and a mass of 10 kg. What is the acceleration of the crate?
(Hint: acceleration = force / mass)
5 m/s2
30 m/s2
10 m/s2
7 m/s2
Cathy is in an airplane that takes off from Boston for the 980 km trip to Detroit. The plane lands two hours later. Which of the following best describes the average speed and direction of the airplane’s flight?
325 km/h West
490 km/h West
980 km/hr West
1960 km/h West
Are the forces on the bowling bowl balanced or unbalanced? What is the net force acting on the object?
balanced, net force zero
unbalanced, net force zero
unbalanced, net force 50 N
unbalanced, net force of 70 N
The graph shows distance to time for one of Anna’s swimming races. What is Anna’s average speed?
2 m/s
6 m/s
8 m/s
72 m/s
What is a force?
a Jedi's Power
only a push
only a pull
a push or a pull on an object
Define gravity.
Gravity is less on the moon
Gravity is an upward force that propels us into space.
Gravity is a downward force that pulls use towards the center of the earth.
Gravity does not exist.
A bug travels up a tree, from the ground, over a 30-second interval. It travels fast at first and then slows down. It stops for 10 seconds, then proceeds slowly, speeding up as it goes. Which sketch best illustrates the bug’s distance from the ground over the 30-second interval?
a
b
c
d
For an object to remain at rest, which of the following must be true?
The forces on it are balanced.
There is no friction.
Gravity does not act on it.
The object has no mass.
What is the force that resists motion between two surfaces that are in contact?
gravity
friction
inertia
resistance
The diagram shows a spinning water sprinkler. Water comes through a hose and is sprayed by the sprinkler. Which principle best explains why the sprinkler spins?
Every action has an equal and opposite reaction.
Solid substances are usually more dense than liquid substances
Energy is released when water condenses.
Most substances expand when heated and contract when cooled.
Your class and another class have a tug-of-war contest. For your class to win, your class must
create a balanced force with the other class.
have a greater force in the direction opposite of the other class.
have a greater force in the same direction of the other class.
create a net force of zero with the other class.
There is an accident ahead, so all of the vehicles on the highway brake at the same time. Which one will come to a complete stop first?
a fully-loaded truck
an empty truck
a midsized van
a small car
Which Law of Motion concept best explains why it is so important to wear seatbelts?
inertia
acceleration
balanced forces
friction
During which span of time was the beetle not moving?
from 0 to 4 minutes
from 4 to 6 minutes
from 6 to 14 minutes
from 14 to 16 minutes
Which graph represents an object that returns to its starting point?
A
B
C
D
Which car was traveling the slowest?
Car #1
Car #2
Car #3
Car #4
An example of a balanced force is
a car sliding on ice.
a tug-of-war game in which no one wins.
a baseball hitting a bat.
a roller coaster going down the first drop.
Which of the following statements does NOT apply to Newton’s second Law of Motion?
The more mass something has, the more force it would take to accelerate it.
Objects of the same size will accelerate equally if they have different forces applied to them.
The more force applied to an object’s mass, the more it will accelerate.
If you’re riding a horse and your horse suddenly stops just before a jump, you will most likely continue moving forward due to
gravity
inertia
friction
speed
If an object starts to accelerate,
a balanced force has acted on it.
friction is acting on it.
velocity is acting on it.
an unbalanced force has acted on it.
Jade is pushing a shopping cart. How can she increase the acceleration of the cart?
By increasing friction.
By decreasing the force applied to it.
By increasing the force applied to it.
By increasing its mass.
Use Newton’s second Law of Motion to calculate how much force would be necessary to move a 100 kg object at a speed of 2 m/s2.
50 N
200 N
102 N
400 N
Read the following statements. Which one is NOT a great illustration of Newton’s 3rd Law of Motion?
Firefighters hold hoses firmly because as the water shoots out, the hose is pushed back.
A car speeding on the highway slows down when they see a police car.
A cannon jumps back as it is fired by a soldier.
When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body
Which statement best summarizes the scientific concept shown in the cartoon?
A falling body accelerates at a constant speed.
The motion of an object is constantly changing due to magnetic forces.
The force of friction causes an object in motion to move faster.
A body in motion will remain in motion unless influenced by an outside force.
