True or False. A bike on grass is a form of friction?
What is true?
100
Gravity is the earth's pull toward ___________________.
What is the center of the earth? (or the core)
100
If you say,"A bird is going 30 miles per hour" you are stating its _______.
What is speed?
100
An object in motion will stay in _____________.
What is motion?
100
True or False: An unbalanced force doesn't affect motion.
What is False?
200
Which creates more friction?
Sandpaper or metal?
What is sandpaper?
200
What is the measurement of the force of gravity on an object?
What is weight?
200
What describes the speed and direction of a moving object?
What is velocity?
200
A rocket taking off is an example of which of Newton's laws?
What is 3rd?
200
The larger the _____________ an object has, the more force is necessary to move it.
What is mass?
300
What is the definition of friction?
Be close to the answer for credit.
What is when two surfaces rub together and prevents or slows motion.
300
Why do you weigh less on the moon?
What is it has less gravitational pull?
300
What is it called when an object is increasing in speed?
What is acceleration?
300
Which of Newton's laws states: That an object at rest will stay at rest and an object in motion will stay in motion at a constant velocity, unless acted upon by an unbalanced force.
What is 1st?
300
Forces always occur in ________________, an action and a reaction.
What is pairs?
400
True or False. Using snow tires on an icy road is an example of increasing friction.
What is True
400
State an example of gravity in motion.
What is a pencil falling off a desk, etc?
400
Speed is equal to ___________ divided by time.
What is distance?
400
Newton's second law states that for every action there is an equal and ____________ reaction.
What is opposite?
400
Force equals___________ times acceleration.
What is mass?
500
What is always created when there is friction?
What is heat?
500
An object with more __________ has more of a gravitational pull on it.
What is mass?
500
What can cause a decrease in speed?
What is friction?
500
Another name for Newton's first law is the law of ___________.
What is Inertia?
500
When forces are balanced they are in a state of _____________________.