Energy
Sitting on the top of a roller coaster is what kind of energy?
Potential
Any push or pull
force
A force that acts when two surfaces rub together is called?
friction
Objects can move in one way. True or False
False- several ways
Balanced forces change an object's motion. True or False
False- balanced force means the same amount of force is being exerted. This means the object will not move.
A car driving down the road has what kind of energy?
Kinetic
The ability to move something is called what?
work
Stored energy is know as what?
potential energy
To find an object's average speed, you need to know the distance traveled and the _____________.
Time
Force is measured in ____________ units.
newton
A baseball being thrown by the pitcher is what kind of energy?
Kinetic
Moving energy is known as...?
Kinetic energy
Any change in speed or direction of motion is called what?
acceleration
Moving a box of feathers requires more force to move than a box of bricks. True or False? Explain.
False-The bricks need more force/work to be moved because the box is heavier than the box of feathers.
An object's weight affects the amount of friction between the object and surface. True or False?
True
A football about the to be thrown in the air is what kind of energy?
Potential
A force that makes objects pull toward each other is called what?
gravity
The objects used to detect motion is known as what?
Relative motion
A student wants to describe velocity of a moving car. What information does the student need to find the velocity.
Speed and direction
Smooth surfaces have more friction than rough surfaces. True or False?
False
A class standing in line quietly not moving is what kind of energy? What kind of energy would they have if they were talking to each other and moving out of line?
2nd ?- kinetic
Your point of view of motion is known as...?
frame of reference
The speed and direction in which an object is moving is known as what?
velocity
What is the resistance an object has to any change in its motion?
inertia
A ball will speed up from the friction of a grassy field.
False- rough surfaces exert more friction. The ball will slow down.