Motion and Forces

I

100

_______________forces result in a net force of 0 N.

balanced

200

According to Newton’s second law, an object’s______ is related to its mass and the net force acting on it.

acceleration

300

How is a period of time during which no motion occurs shown on a distancetime graph? A. vertical line B. horizontal line C. line sloping upward D. line sloping downward

B

400

Diagram see #13

motion

II

100

The force of____ between two objects is determined by their masses and the distance between them.

gravity

200

The______ is the sum of all the forces acting on an object.

net force

300

See diagram #10

distance or direction

400

Diagram see #14

speed

III

100

Electrical forces are an example of a(n)________ force.

noncontact

200

What additional information is needed to determine the velocity of an object moving at 3 km/h? A. the mass of the object B. the direction of motion C. the size of the net force acting on the object D. the object’s displacement from the reference point

B

300

Diagram see #11

Distance or Direction

400

Diagram see #15

Velocity

IV

100

_________forces always cause a change in velocity.

unbalanced

200

On a speed-time graph, what is indicated by the distance between the x-axis and the line representing motion? A. the speed of the object B. how long the object has been in motion C. the direction in which the object is moving D. the object’s position relative to a reference point

A

300

Diagram see #12

reference point

400

Diagram see # 16

acceleration