Speed and Acceleration

What is speed?

• The time taken to travel a certain distance.

• The distance travelled in one second.

• Your acceleration.

• How long a journey takes.

Tags

NGSS.MS-PS3-1

A runner travels 40 metres in 2 seconds. What is their speed?

• 20 m/s

• 80 m/s

• 42 m/s

• 0.05 m/s

Tags

NGSS.MS-PS3-1

Which of the following is not a unit of speed?

• mps

• mph

• m/s

• km/h

Tags

NGSS.MS-PS3-1

Which of the following is the relationship for the distance travelled?

• d = v + t

• d = t / v

• d = v / t

• d = v x t

Which of these cars has the biggest acceleration?

• 0 - 60 mph in 6 seconds

• 0 - 30 mph in 6 seconds

• 0 - 60 mph in 3 seconds

• 0 - 30 mph in 9 seconds.

Tags

NGSS.HS-PS2-1

Which of the following best describes this journey?

• Acceleration; deceleration; constant speed.

• Constant speed; acceleration; deceleration.

• Deceleration; acceleration; constant speed.

• Acceleration; constant speed; deceleration.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of these is the correct definition for acceleration?

• Increase in speed.

• Increase in speed in one second.

• Distance travelled in one second.

• Decrease in speed.

Calculate the acceleration of a car if it speeds up from 0 to 45 m/s in 5 seconds.

• 9 m/s²

• 40 m/s²

• 45 m/s²

• 225 m/s²

Tags

NGSS.HS-PS2-1

Calculate the acceleration of a bike that speeds up from 15 m/s to 35 m/s in 4 seconds.

• 4 m/s²

• 5 m/s²

• 12.5 m/s²

• 20 m/s²

Tags

NGSS.HS-PS2-1

A car is travelling a journey of 120 miles in a time of 3 hours. A police speed trap detects the car travelling at 75 mph. Which of the following statements is TRUE?

• Average speed = 360 mph; Instantaneous speed = 75 mph

• Instantaneous speed = 40 mph; Average speed = 75 mph

• Average speed = 40 mph; Instantaneous speed = 75 mph

• Average speed = 75 mph; Instantaneous speed = 360 mph

Tags

NGSS.MS-PS3-1