Newton's Laws

Newton's Laws of Motion

Multiple Choice

When an unbalanced force acts on an object, the force ______________________.

• changes the motion of the object

• is cancelled by another force

• does not change the motion of an object

• is equal to the weight of the object

Multiple Choice

When two equal forces act in opposite directions on an object, they are called ______________________.

• frictional force

• balanced force

• centripetal force

• gravitational force

Multiple Choice

Which of the following is the units for acceleration?

• kg*m/sec/sec
• kg*m/sec
• m/sec/sec
• m/sec

Multiple Choice

When a heavy football player and a light one run into each other, who exerts more force?

• The heavy one
• The light one
• They are equal
• there is no such thing as force

Multiple Choice

For every action there is ______ and opposite reaction.

• an equal
• a stronger
• a weaker
• an exciting

Multiple Choice

A person is pushed forward into their seatbelt when a car stops. Which of Newton's Laws explains this?

• 1st

• 2nd

• 2 and 3

• 3rd

Multiple Choice

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

Multiple Choice

The combination of all the forces acting on an object is the...

• net force
• action force
• reaction force
• balance force

Multiple Choice

A force that opposes motion between a surface in contact with the atmosphere.

• air resistance
• gravity
• momentum
• terminal velocity

Multiple Choice

The force that opposes motion between two surfaces in contact with each other.

• inertia
• friction
• momentum
• gravity

Multiple Choice

The tendency of an object to resist changes in its motion is...

• inertia
• force
• acceleration
• velocity

Multiple Choice

What is the net force and the direction of movement?

• 50 Newtons, Left
• 50 Newtons, Right
• 500 Newtons, RIght
• 450 Newtons, LEft

Multiple Choice

An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations

• Newton's first law
• Newton's second law
• Newton's third law
• Conservation of momentum

Multiple Choice

Which of these best describes why your weight (on Earth) would change on another planet?

• weight doesn’t change, no matter where you are
• different planets have different gravitational pulls
• In general, the smaller the planet, the greater weight
• dehydration effects on different planets change weight

Multiple Choice

 267.5 N unbalanced force applied to push a stuffed chair across the room, causing an acceleration of 4.2 m/s2. What is the mass of the chair?

• 26.75 kg
• 63.69 kg 
• 263.3 kg 
• 1123.5 kg

Multiple Choice

What is the definition of "weight"?

• the force in which gravity pulls on an object
• the time it takes to get on a ride 
• the amount of matter in an object
• the size of an object

Multiple Choice

A soccer ball accelerates more than a bowling ball when thrown with the same force.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Multiple Choice

A person’s body is thrown outward as a car rounds a curve on a highway.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?

• 10 m/s^2
• .1 m/s^2
• 100 m/s^2
• 1 m/s^2

Multiple Choice

If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?

• 150 Newtons
• 15 Newtons
• 150 kilograms
• 100 kilograms

Multiple Choice

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Multiple Choice

Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.

• The Law of Inertia
• The Law of Acceleration
• The Law of Conservation of Momentum

Multiple Choice

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law

Multiple Choice

Object at rest stays at rest.

• 1st
• 2nd
• 3rd

Multiple Choice

Object at rest stays at rest.

• 1st
• 2nd
• 3rd

Multiple Choice

Acceleration is due to a force put on an objects mass. 

• 1st
• 2nd
• 3rd

Multiple Choice

• 1st
• 2nd
• 3rd

Multiple Choice

• 1st

• 2nd

• 3rd