I need help with this physics quiz

1.

The line segment BC on the distance vs. time graph given above indicates that the object is moving at a constant speed.

True

False

2.

A bus covers a distance of 160 miles in 4 hours. Its average speed in miles per hour is

4

40

640

None of these

Half-n-half Clue

3.

If an object moves through equal distances in equal times, then it is moving at a constant _______.

acceleration

velocity

speed

displacement

Half-n-half Clue

4.

Acceleration can be negative.

True

False

5.

Consider the graph of distance (in m) vs. time (in s) given above. After 8 seconds, the object has traveled a distance of

100 m

110 m

160 m

20 m

Half-n-half Clue

6.

Which of the following quantities is a scalar?

speed

velocity

acceleration

force

Half-n-half Clue

7.

The line segment BC on the velocity vs. time graph given above indicates that the object is constantly accelerating.

True

False