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100
What is Newton's first law of motion?
An object at rest remains at rest unless acted upon by an outside force. An object in motion remains in motion unless acted upon by an outside force.
100
A push or pull
Force
100
Contact force or noncontact force?
Hitting a tennis ball with a tennis racquet
Contact Force
100
Stored up energy is called...
Potential Energy
100
Energy in motion is called....
Kinetic Energy
200
Which has more inertia?
A Feather or A Bowling Ball?
Bowling Ball
200
A force between two surfaces which prevents them from sliding past one another.
Friction
200
Forces that cause a change in motion are called..
unbalanced forces
200
Friction in the air is called...
Air Resistance
200
What is the direction and amount of force for the box in this diagram?
40 Newtons to the right
300
Name 2 types of Noncontact forces?
Gravity, Magnetism, Electricity
300
Give an example of a situation that demonstrated Newton's first law of motion
Answers will vary
300
The sum of all forces acting on an object
Net Force
300
In a game of tug-o-war, what happens when the forces exerted by Team A and Team B are balanced?
neither team wins
300
How are mass and inertia related?
More mass = more inertia
400
A change in position/distance is called/indicates _______________
Motion or Displacement
400
What force causes it to be more difficult to walk on ice than on a dry sidewalk?
Friction
400
Forces on an object that are equal in size and opposite in direction, cancelling each other out are called...
Balanced Forces
400
As motion increase, friction ____________
decreases
400
When going on a roller coaster, at which point do you have the MOST potential energy?
At the top of the highest hill
500
Besides strength or magnitude, what does every force have?
Direction
500
A bullet train shoots down a track at 72 meters per second. Inside the train, a man runs to the bathroom towards the front of the train at 3 meters per second. What is the man's speed if the reference point is the distant mountain?
75 meters per second
500
A cruise ship is moving at 40 miles per hour. On it's deck, a child drives a remote control car 5 miles per hour in the opposite direction of the boat. How fast is the car moving if the child is the reference point?
5 miles per hour
500
True or False? An object in constant motion without friction AND an object at rest BOTH have balanced forces acting on them with a Net Force of 0!
TRUE
500
What Net Force Value do two equal forces in opposite direction have? (no naked numbers)
0 Newtons