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What is a force?
Only a push only a pull
A push or pull on an object
A kind of motion
Something that stops motion
Which of these is an example of a force acting?
A person pushing a box
A box staying still
A tree standing in a forest
A rock lying on the ground
What happens when unbalanced forces act on an object?
It becomes invisible
It stays put forever
It changes its motion
It disappears
Which direction does acceleration involve?
Slowing down or changing direction
Only backwards motion
Speeding up
Only rotation
Friction is a force that…
Makes objects fly
Resists motion
Helps motion always
Only works in water
Gravity is a force that…
Pulls things toward Earth
Pushes things away from Earth
Stops motion completely
Only acts in space
True or False: Balanced forces mean an object will continue at the same speed and direction.
True
False
True or False: A heavy object always accelerates slower than a lighter object under the same force.
True
False
True or False: A pull is a type of force just like a push.
True
False
True or False: If no net force acts on an object
True
it can still change direction.
False
True or False: Applying a force is the only way to change an object’s motion.
True
False
Which of these changes can a force cause?
Motion start or stop
Speed change
All of the above
Direction change
What term describes a force being applied over time to change velocity?
Gravity
Inertia
Acceleration
Deceleration
Which of Newton’s laws says “an object at rest stays at rest...”?
Third Law
Second Law
Law of Conservation
First Law
Which factor reduces acceleration when force is constant?
Greater mass
Smoother surface
Less mass
More force
Why do objects eventually stop moving if no one pushes them?
Because it loses size
Because it turns invisible
Because nothing touches it
Because friction or other forces act on it
