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20 questions
What is a PUSH or PULL of an object?
Motion
Force
Friction
Gravity
What pulls a ball back to earth?
Gas
Gravity
Friction
Molecules
_______ is a force that acts between two objects which are touching. This force slows any movement between the two objects.
pressure
magnetism
friction
the amount of material in a substance
inertia
force
mass
motion
What surface would probably offer the least friction if you were to slide a box across it?
The rougher the surface, the faster an object will travel over the surface.
True
False
1. It is easier to ride a bicycle down a hill than to ride up a hill because _______ helps the bicycle move down the hill.
gravity
friction
rotation
the tendency of an object to resist a change in its motion
acceleration
inertia
mass
Objects with greater _________ also have greater inertia.
speed
mass
friction
An object following a straight-line path at a constant speed
has zero acceleration
has no forces acting on it
has a net force acting in the direction of motion
none of these
When are you undergoing an acceleration in a car?
speed up
slow down
make turns
All of the above
If an object has a large mass, it needs a stronger force to make it accelerate. Which law of motion does this describe?
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Pushing a child on a swing is easier than pushing an adult on the same swing would be an example of which law of motion?
1st Law
2nd Law
3rd Law
Identify the law of motion which states that forces always act in equal and opposite pairs.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Which law of motion does this picture illustrate?
1st Law
2nd Law
3rd Law
What will cause an object at rest to no longer be at rest?
if the object's mass is greater than the gravitational pull on it
if the mass of a nearby object is greater
if it is placed on a flat surface
if an outside force acts on it
Which one of Newton's Laws says that for every action, there is an equal and opposite reaction?
1st
2nd
3rd
Law of Universal Gravitation
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