Unit 3 Test review

Which is a way to decrease friction

The forces in Newtons 3rd law are

Force = Mass times Acceleration

Which is an example of helpful friction?

The amount of gravitational force between objects depends on their _____.

If the net force on a moving object is 0, then it will 

Acceleration due to gravity on earth is

Your ________ would be different on the moon

The sum of all the forces acting on an object is called

If I punch a wall, which has a greater force?

A feather will fall through the air more slowly than a brick because of _____.

A seatbelt stops your _______ in a car crash

_____ is a force that opposes the motion of objects that move through the air.

For ever action there is an equal and opposite reaction force

The force of attraction between any two objects

If an object is moving at a constant speed in straight line, no forces are acting on it

If I am in a car going 120 km/h, how fast am I moving in my seat?

The gravitational force exerted on an object is called the object’s _.

A rocket pushes gas down to move up.  Which of Newtons Laws is this?

An object at rest stays at rest until acted upon by a unbalanced force

If 2.5 kg box get pushed with 50 N of force, how much will it accelerate

If a 50 kg box  accelerates 10 m/s², how much force acted on it

A baseball hurled by a powerful pitcher has greater ____________ than one lobbed gently.

What noise does a giraffe make

Equal Forces DO NOT have Equal _________

_____ is the force that opposes the motion of two surfaces that are touching each other.

As an object falls faster, the force of air resistance _.

The tendency of an object to not change its motion 

If a 500-N action force is exerted to the right, the reaction force will be _____.