Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Net force
Random
100
Define force.
A push or pull that cause motion in an object.
100
What is the mathematical equation for Acceleration?
a = f / m
100
Forces always happen in ______
pairs
100
A box is pushed with 17N to the right, friction pushes back with 9N. What is the net force?
8N
100
What is the 4th planet from the sun?
Mars
200
When an object is not in motion it has an ________________ force.
balanced
200
What is happening to the car at 2?
It is not moving
200
If a box is pushed to the right with a force of 14N, what are the possible quantities of friction? List them all.
0,1,2,3,4,5,6,7,8,9,10,11,12,13. Less than 14.
200
A car experiences 850 N of forward thrust while air resistance is 120N and friction is 130N backward. What is the net force? What direction is the car moving?
600N forward
200
Draw a freebody diagram for a parachute being dropped from the 2nd story. Add labels.
Force of gravity, force of air resistance
300
What is the force acting against forward motion?
Friction
300
A box is pushed with 64N, acceleration is 10 m/s2 . What is the mass of the box?
6.4kg
300
A bowling ball collides with a set of bowling pins (at rest) with a force of 15N. What is the force the pins exert on the bowling ball?
15N
300
A person pushes a 10kg crate with a force of 120N. There s 40N of friction between the box and floor. What is net the net force? What is the acceleration of the crate?
80N = Net force
8 m/s2 = acceleration
300
What is happening to the car?
constant velocity of 50 m/s
400
What is the Net Force? Why?
0 because it is balanced
400
Mass is 40kg and acceleration is 2.5m/s2. What is force?
100N
400
What is the Net Force?
50N
400
What force stops a ball that is thrown in the air from flying up forever?
Gravity
400
A force of 20N acts upon a 5 kg block. Calculate the acceleration of the object.
4m/s2
500
What does Newton's First Law state?
An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force.
500
If you want to increase the acceleration of a baseball when you throw it, what must you increase to make this happen?
Force
500
Newtons 3rd law states that for every _______, there is an _______ and __________ reaction.
action, equal, opposite
500
Draw a free body diagram and solve for net force.
Two employees pull a box across the floor. The first employee pulls with a force of 75N east. The second pulls with a force of 125N east. The floor is carpeted, so friction resists their efforts with 80N westward.
Net force = 120N
500
A student walks 50 m east in 40 seconds, then walks 50 m west back to their starting point in 20 seconds. What is the students velocity?
0