What are Speed & Velocity

What is the SI unit for speed?

• miles per hour

• feet per second

• kilometers per hour

• meters per second

Is speed a scalar or a vector quantity?

• Both

• Vector

• Neither

• Scalar

What does velocity take into account that speed does not?

• Distance

• Direction

• Acceleration

• Time

How do you calculate average speed?

• Total distance divided by total time

• Displacement divided by change in time

• Displacement divided by total time

• Total distance divided by displacement

What is the average speed of a car that travels 1600 meters in 55 seconds?

• 27.3 meters per second

• 30 meters per second

• 28.8 meters per second

• 29.1 meters per second

What is the difference between average velocity and instantaneous velocity?

• There is no difference

• Average velocity is faster

• Instantaneous velocity is always zero

• Instantaneous velocity is at a specific point in time, average velocity is over the course of a journey

What does a straight line on a position time graph indicate?

• Increasing velocity

• Zero velocity

• Constant velocity

• Decreasing velocity

How can you determine the velocity of an object by looking at a position time graph?

• By looking at the slope of the line

• By the color of the line

• By measuring the height of the line

• By the length of the line

Tags

NGSS.MS-PS3-1

What is the average velocity of a car that travels 24 meters in 7 seconds and ends 8 meters away from the starting point?

• 3.43 meters per second

• 1.14 meters per second to the right

• 3 meters per second

• 2.67 meters per second to the left

How do you calculate the average velocity of an object?

• Total distance divided by total time

• Change in time divided by change in position

• Total distance divided by change in position

• Change in position divided by change in time