1st Law
2nd Law
Force
3rd Law
Gravity
100
The tendency of an object to maintain its state of motion is
Inertia
100
How does increasing force affect acceleration?
DIRECT- more force = more acceleration!
100
What is the equation for force?
F = m*a
100
Pairs of equal-opposite forces are called
Action-reaction pairs
100
What is the measure of the acceleration of gravity on earth?
9.8 m/s2
200
When a car stops suddenly, inertia will cause the passenger to
Continue moving forward
200
Which item would take more force to lift- a baseball or a bowling ball?
Bowling ball (more mass)
200
Acceleration is DIRECTLY or INVERSELY proportional to mass?
INVERSELY
200
State Newton's 3rd Law
For every action there is an equal and opposite reaction
200
Moving from planet to planet, ______________ changes but _______________ stays the same
WEIGHT changes, MASS stays the same
300
What will be the net force AND DIRECTION of the following:
17N to the RIGHT (East)
300
An object with a mass of 62 kg is pulled with a force of 248N. What is the object's acceleration?
4 m/s2
300
What is the force of an object with a mass of 5kg and an acceleration of 29 m/s2
145 N
300
When you hit the breaks driving a car, how many actions take place
TWO- brakes apply force to the wheels, wheels apply force to the brakes
300
As an object's mass increases, what happens to its gravitational force?
INCREASES
400
If there was no friction, how far would a rolling ball continue in a straight line?
Forever
400
What is the acceleration of an object with a mass of 3kg being pushed with a force of 6N?
2 m/s2
400
The acceleration of gravity on Venus is 8.9 m/s2. How much would an object with a mass of 10kg weigh on Venus?
89 N
400
When a 0.5kg fly hits a 1000kg truck, which exerts the larger force?
Forces are the SAME
400
A bowling ball and a ping pong ball are both dropped from the top of a tall building. Which falls faster?
THE SAME
500
ORDER the items from LEAST to MOST inertia:
tennis ball, semi truck, bowling ball, small pebble
pebble --> tennis ball --> bowling ball --> semi truck
500
A force of 45 N causes an object to accelerate from stopped to a speed of 10 m/s in 2 seconds. What is the object's mass?
9 kg
500
What force would cause a 15kg wagon to accelerate from rest to 2m/s in 0.5 seconds?
60 N
500
Pushing a box with a force of 75N, the box doesn't move. What is the magnitude of the force pushing back from the box?
75 N
500
Which has more mass- an object with a gravitational force of 100N on earth or an object with a gravitational force of 100N on the moon?
On the MOON- less gravity so must be higher mass!