Forces & Newton's Laws Test Review

The formula for momentum is p= mv, where p= momentum, m= mass and v= velocity. The

relationship between momentum and mass is

a. normal c. indirect- as mass goes up, momentum

• normal

• direct- as mass goes up, momentum goes

  up

• indirect- as mass goes up, momentum

  goes down

• cannot be determined without more

  information

A person in a head- on collision, who is not wearing a seat belt, continues to move forward at the

same speed of the car because of ____________

• inertia

• friction

• weight

• gravity

If a 300 N action force is exerted to the right, the reaction force will be

• 300 N to the right

• 600 n to the right

• 300 N to the left

• 600 N to the left

Forces between objects that touch each other are _________ forces

• weak

• balanced

• contact

• non- contact

Newton’ 1st Law of Motion states that an object at rest or moving at a constant speed in a

________________________ will continue to do so until a net force acts on it.

• curved path

• tate of acceleration

• Elliptical orbit

• straight line

Newton’s 3rd Law of Motion can be stated as “For every action there is a(n) _______ reaction.”

• stronger and opposite

• equal and identical

• equal and opposite

• weaker and opposite

Newton’s 2nd Law of Motion states that an object acted upon by a net force will accelerate in the

direction of the force according to the equation ___________.

• F = mv2-mv1

• v= at

• a= F/ mass

• F= m/ a

Momentum is a measure of ______________ .

• the tendency of an object to change

  its motion

• the amount of force acting on an

  object

• . the amount of matter in an object

• how hard it is to stop an object

A real car moving at 10 km/h has more momentum than a toy car moving at the same rate because

____________.

• its mass is greater

• its mass is greater

• it moves faster

• of friction

A ball is dropped from the roof of a building. Points A, B, C, and D in the diagram below represent positions of the ball as it falls. At which position will the ball have the greatest kinetic energy?

• A

• B

• C

• D

Answer explanation