Motion
The distance an object travels in a certain amount of time. (distance/time)
What is speed?
The 2 variables plotted on a motion graph's axes.
A. Distance and time
B. Speed and time
C. Motion and distance
What are A. distance and time?
The variables that affect the gravitational force between two objects.
What is mass and distance?
An object in motion tends to stay in motion unless another force acts on it. What type of force would change the motion?
What is an unbalanced force?
Why does a penny accelerate as it is dropped from the top of a tall building?
Gravity (force of the Earth pulling on it)
The three ways you can accelerate.
What are, speed up, slow down, and turn?
A straight, horizontal line, represents this kind of speed on a speed/time graph.
What is a constant speed?
The units used for measuring and recording force.
What is a Newton?
What is needed in order to slow down an object?
What is a force?
A credit card, a DVD, a stereo speaker, and a computer hard drive all use this type of non-contact force.
A. Magnetism
B. Gravity
C. Electricity
A. What is magnetism?
The tendency for an object to continue to move at the same speed and direction unless another force acts on it.
What is inertia?
A curved line represents this kind of speed on a motion graph.
What is an accelerating speed?
Balanced forces on an object have a net force equal to this.
What is "0".
What is the force that acts at the boundary between the air and a runner to slow her down?
What is friction?
Acceleration of an object moving at a constant speed of 25 meters per second for a time interval of 5 seconds.
Answer: What is "0"?
(Explanation...because it is moving at a constant speed)
A rock is rolling down a hill. The rock has______ energy.
What is Kinetic energy?
A negative (moving downward), steep slope on a motion graph represents what direction and what speed?
A. Backwards and slower B. Backwards and faster
C. Forward and slower D. Forward and faster
What is a B. backwards direction and faster speed?
To change an object's motion, this kind of force must be applied to the object.
What is an unbalanced force?
Newton's 3rd Law tells us that for every action there is an _________ and __________ reaction.
What is EQUAL and OPPOSITE?
An object is moving at a constant speed around a circular track? It is
a. not accelerating because it is not changing speed
b. accelerating because it is changing direction
c. not accelerating because there is no net force
What is "B" accelerating because it is changing direction?
Two people are trying to move a box. One is pushing 6 Newton's to the west and the other is pushing 6 Newton's to the east. What must be true of the boxes MOTION?
A. Accelerating B. Not accelerating
C. Not enough information
What is it is B. not accelerating?
A horizontal line represents what speed on a distance/time graph?
What is a speed of "0"?
In this location, the gravitational pull from Earth would be the LEAST.
a.Visiting Sponge Bob at the bottom of the sea
b. Hanging out at the beach
c. Visiting Heidi in the Alps
C. What is visiting Heidi in the Alps
The net force and direction on an object when a pulling force of 100 N is applied to the right side and another pulling force of 400 N is applied at the same time to the left side of the object.
What is 300 N to the left?
If the distance between two objects decrease and the masses of the objects remain the same, then the force of gravity between the two objects______.
a. Increases
b. decreases
c.remains the same
d. is not affected
What is A. increases?