Friction
Force
Straight Line Motion
Direction of Motion
Misc.
100
Friction is caused by the _______ of objects, liquids, or gases to slide past each other.
What is resistance?
100
When an object rolls over a surface, what type of force is acting on it?
What is rolling friction?
100
A change in position of an object is its:
What is motion?
100
According to Newton's first law of motion, an object that is moving in a straight line at a constant speed:
What is will continue moving the same way at the same speed until it is acted upon by an unbalanced force.
100

The speed and direction of an object's motion is its

What is velocity?

200
The interaction between the air molecules and the surface of a moving object causes which type of friction?
What is air resistance?
200
What effect does friction have on a moving object.
What is It causes the moving object to slow and eventually stop?
200
The speed and direction of an object's motion is its ___________.
What is velocity?
200
A stationary object acted on by one force toward the east and an equal force toward the south will move _________.
What is southeast?
200

In the absence of friction, if a force acting on a moving object stops acting, the object will

What is keep moving at a constant speed?

300
Friction causes the kinetic energy of a rolling ball to be converted into...
What is heat energy?
300
If a force acting on a moving object stops acting, the object will ___________.
What is keep moving in the same direction?
300
Suppose an object is moving through space at a constant speed. What will happen to the object if it is acted upon by an unbalanced force in the same direction that it is moving?
What is The object will speed up and keep moving in the same direction.
300
If a moving object is acted upon by balanced forces:
What is the object's motion will not be affected.
300

Velocity is the _________ of an objcet.

What is speed and direction?

400
Emily is a competitive swimmer. Why does wearing a swim cap help Emily swim faster?
What is The cap decreases the friction between her and the water.
400
Three forces are acting upon a box; one at 40N left, one at 60N right, and one at 29N downward. Assuming there is no friction between the floor and the ground, how will these forces affect the position of the box?
What is The forces will cause the box to move to the right.
400
Earth is held in its orbit around the Sun by the force of gravity. What would happen to Earth's motion if the Sun were to vanish suddenly?
What is Earth would move off through space in a straight line.
400
If an object is moving at a constant speed and a force acts on it at right angles to its direction of motion, the object will ___________.
What is change direction?
400

A change in position of an object is its:

What is motion?

500
The force that prevents a ball rolling on the ground from continuing on its path forever is...
What is friction?
500
If a force acts constantly on a stationary object, the object will...
What is accelerate in the direction of the force?
500
A river flows south at 10 meters per second. A canoe set out from the river’s eastern shore straight across toward the other side. Which best describes the canoe’s path?
What is The canoe's path will be a diagonal line from northeast to southwest.
500
An objects resistance to a change in motion.
What is inertia?
500

Give 3 examples of units of measure for average speed.

What is miles per hour, inches per minute, feet per second, etc.

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