Motion, Speed, and Acceleration

Which two measurements do you need to determine the speed of an object?

• Position and Reference point

• Distance and Reference point

• Distance and Time

• Distance and Velocity

Tags

NGSS.MS-PS3-1

Which of the following is NOT an example of acceleration?

• Driving at a steady speed and turning left.

• Driving at a steady speed and then slowing down.

• A change in velocity from 40km/h to 65 km/h

• A car moving at a steady speed of 60 km/hr.

What is motion?

• the location of an object

• the change in position over time

• distance divided by time

• the velocity of an object

How do you calculate average acceleration of an object?

• Subtract the final velocity from the initial velocity and divide by time

• Subtract the initial velocity from the final velocity and divide by time

• Add the the two distances and divide by the total time

• Divide distance by time

What is acceleration?

• A change in position over time.

• The rate at which one quantity distance changes compared to another quantity time 

• The rate at which velocity changes

• A measure of how far something moves in a given amount of time. 

If a truck travels at a steady velocity, will there be any acceleration?

• Yes

• No

In a race, Taylor ran the first 50 meters in 20 seconds and the second 50 meters in 12 seconds. What is his average speed during the race?   Speed = distance / time 

• 4.54 m / sec

• 4.55 m /sec 

• 0.22 m / sec 

• 2.5 m / sec 

The rate at which velocity changes is called?

• Speed

• Acceleration

• Position

• Motion

Calculate the average acceleration of a car given the following information:

Initial velocity 10 m /sec   
Final velocity  55 m /sec 

The change in velocity took 3 seconds 

• 18.33 meters per second squared 

• 21.67 meters / second squared 

• 15 meters / second squared 

Tags

NGSS.HS-PS2-1

If a graph of an objects motion shows a line falling from left to right, the acceleration is ?

• Positive

• Negative

• Zero