Question 1

The speed at any instant of time is known as

Accepted Answer

instantaneous speed

Answer

given speed

Answer

velocity

Answer

average speed

Question 2

If a total distance of 750 m is covered in a time interval of 25 s,the average speed is ______?

Accepted Answer

30 m/s

Answer

3,972 mph

Answer

30 mph

Answer

3 mph

Question 3

______________ describes how fast something is going, whereas, __________ describes how fast something is going and in a certain direction.

Accepted Answer

speed,velocity

Answer

rate,velocity

Answer

rate,speed

Answer

speed,acceleration

Question 4

Which of the following is a measure of velocity?

Accepted Answer

30 m/s, South

Answer

30 m/s

Answer

30 South

Answer

30 s

Question 5

The SI unit for speed is the ________.

Accepted Answer

m/s

Answer

none of the answers

Answer

in./hr

Answer

cm/min

Question 6

The formula for speed is -

Accepted Answer

speed=distance divided by time

Answer

speed= vecotiy divided by time

Answer

speed=accleration divided by velocity

Answer

speed=time divided by distance

Question 7

Acceleration is the change in velocity per unit -

Accepted Answer

time

Answer

distance

Answer

speed

Answer

velocity

Question 8

A race car rounds a curve on the track at a constant speed of 180 mph. Is the car accelerating?

Accepted Answer

Yes, its direction is changing

Answer

No,its mass is constant

Answer

Yes,its speed is changing

Answer

No, its speed is constant

Question 9

Instantaneous speed is measured

Accepted Answer

at a particular instant

Answer

when the object reaches it destination

Answer

over the duration of the trip

Answer

at the starting point

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