Is a baseball being hit by a bat an example of a contact or non-contact force?
contact force
100
What is a measure of how much space something takes up?
mass
100
Two children are pulling on a rope, but the center of the rope is not moving. Does this mean that both children have equal mass, both children are pulling equally, or one child is pulling harder than the other?
Both classes are pulling equally.
100
What is the the rate at which someone or something is able to move or operate, the distance covered per unit of time?
speed
100
Who compiled the laws of motion?
Isaac Newton
200
What non-contact force is at work when you throw a ball in the air and the ball falls back down?
gravity
200
What is a contact force between two objects rubbing together?
friction
200
If mass is added to an object in motion, such as adding a passenger to a toy airplane, will the airplane move faster, slower or at the same speed?
It will move slower.
200
When the speed of an object remains the same, it does not increase or decrease, the object is moving at a _________ speed.
constant
200
If you are pulling a heavy wagon and a friend comes up to help you pull, will the motion of the wagon accelerate, change direction, or continue unchanged?
It will accelerate.
300
Is the force of wind to turn a windmill an example of a contact or non-contact force?
contact force
300
What kind of forces do not cause a change in motion and are equal in size and opposite in direction?
balanced forces
300
If the forces acting on a train moving along a track are balanced, will the motion of the train speed up, stop or continue unchanged?
The motion will continue unchanged.
300
What means the force with which an object has been pushed or pulled by another object?
applied force
300
Sometimes objects are used to compare motion, like a mailbox, bike or a tree, in relation to something that is in motion like a car. The object that is not in motion (mailbox, bike or tree) is called a _____________ point.
reference
400
Is an electrical field an example of a contact or a non-contact force?
non-contact force
400
What is a way to measure how fast something is speeding up?
acceleration
400
If you increase the speed of wind blowing on a sail on a sailboat, will the movement of the boat speed up, slow down, stop or change direction?
It will speed up.
400
What is the speed of something in a given direction?
velocity
400
Explain how and what tools you could use to measure the speed of a toy car rolling across a floor.
Use a meter stick or tape measure to measure the distance the car traveled and use the stopwatch to measure the time it took the car to travel a certain distance.
500
Is a magnet pulling a paper clip toward itself an example of a contact or a non-contact force?
non-contact force
500
What is energy possessed by an object due to its' motion or movement?
kinetic energy
500
Why do you have to push harder to push something up a hill than you have to push while pushing the object on flat ground?
Because the gravity is increased on the object.
500
What is a way of measuring how hard it is to change the momentum of an object?
inertia
500
Every person will view an object slightly differently from every other student in the room because each person has a different point of _____________.