kinematics Quiz 1d

What is speed?

• It is how far you go

• It is the distance traveled over a period of time

• It is how fast you accelerate

• It is the change in the postilion of a object

What is the difference between instantaneous speed and average speed?

• Average speed happens in a particular instant, Instantaneous speed is the speed of an object over a longer period of time.
• Instantaneous speed is never right, average speed is always right
• Instantaneous speed happens in a particular instant, Average speed is the speed of an object over a longer period of time.
• Do not pick this answer

What is velocity?

• the quickness of an object
• the location of an object
• acceleration
• speed in a specific direction

Turning a corner on a motorcycle is always an example of ____.

• Speed

• Velocity

• A change in speed

• A change in velocity

Reese can run 10 meters in 5 seconds. What is her speed?

• 5 meters/sec
• 2 meters/sec
• 5 miles/hour
• 2 miles/hour

What is the formula to calculate speed?

• Speed = time/distance
• Speed = distance/time
• Speed = distance x time
• Speed = time x distance

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

• 10 seconds

An old lady rolls down a hill at 3 meters/second. The hill is 36 meters long. How many seconds does it take the old lady to reach the bottom of the hill?

• 39 seconds

• 12 seconds

• 15 seconds

• 33 seconds

Which of the following is a unit of speed ?

• sec
• mi
• m/s
• min

The scientific (SI) unit for measuring distance is the ________ .

• mile
• foot
• kilometer
• meter