Acceleration
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Gravity
100
Objects fall to ground at the same rate because this is the same for all objects.
What is acceleration due to gravity?
100
An object that is not moving is said to be this.
What is at rest?
100
An object's acceleration decreases as what?
What is mass increases?
100
If a force is exerted, another force occurs that is equal in size and this.
What is opposite in direction?
100
This occurs when there is no air resistance.
What is free fall?
200
All objects accelerate toward Earth at his rate.
What is 9.8 m/s/s.
200
In bumper cars, an unbalanced force from another car acts on your car changing this.
What is the car's motion?
200
The acceleration of an object is always in what direction?
What is the direction of the force applied?
200
Action and reaction forces in a pair do not do this.
What is act on the same object?
200
An orbiting spacecraft is actually these two motions combined.
What are forward motion and free fall to Earth?
300
The amount of air resistance on a falling object depends on these two things.
What are size and shape of the object.
300
Because of this, it is often difficult to observe the effects of Newton's 1st Law of Motion.
What is friction?
300
To change the direction of an object, you must first do this.
What is exert a force in the direction you want to go?
300
Momentum is a property of moving objects that depends on these two things.
What are mass and velocity?
300
An object in this type of motion is constantly changing direction.
What is circular?
400
When the net force of an object is zero the object is falling at a constant velocity which is also known as this.
What is terminal velocity?
400
This is why it is impossible for a plane, car or bicycle to stop instantaneously.
What is inertia?
400
The relationship of acceleration to mass can be expressed in this mathematical expression.
What is acceleration equals Force divided by mass?
400
Any time two or more objects interact , they may exchange momentum, but the total amount of momentum remains the same. This is known as...
What is the Law of Conservation of Momentum?
400
This type of motion that means "toward the center" is the unbalanced force that causes objects to move in a circular motion.
What is centripetal force?
500
A brick falls from the top of a building and strikes the ground with a velocity of 19.6 m/s. How long was the brick falling?
What is 2 seconds?
500
Pitching a softball is easier that pitching a bowling ball because it has less inertia and this.
What is mass?
500
What force is necessary to accelerate a 1250 kg car at a rate of 40 m/s/s?
What is Force = mass x acceleration 1250 kg x 40 m/s/s = 50,000 N
500
One way to increase the acceleration of a loaded grocery cart is to increase the force applied. This is the other way.
What is decrease the mass?
500
These two motions combine to form projectile motion.
What are horizontal and vertical?
M
e
n
u