Motion-Review

Which of these measurements is a scalar quantity?

• 4 m East

• 3 m down

• 2 m

What is the displacement of an athlete who runs around a 100 m track three times and ends where they started?

• 300 m

• 0 m

• 200 m east

The slope of a position-time graph shows the ____.

• Velocity

• Acceleration

The slope of a velocity-time graph shows the _____.

• Position

• Acceleration

If a cyclist covers 20 m in 2 s, what is their speed?

• 10 m/s

• 18 m-s

• 40 ms

Describe the motion of the object at 10 s (where the line crosses the x-axis).

• It changes direction

• It speeds up

How would you walk to create the graph shown?

• stand still

• walk away from the detector at constant speed

• walk toward the detector at constant speed

• walk away with increasing speed

How would you walk to create the graph shown?

• stand still

• walk away from the detector at constant speed

• walk toward from the detector at constant speed

• walk toward from the detector with decreasing speed

How would you walk to create the graph shown?

• stand still

• walk away from the detector at constant speed

• walk toward the detector at constant speed

• your speed is zero

How would you walk to produce this graph?

• walk away slow for 4 minutes, stand still for 4 minutes, walk away fast for 2 minutes

• walk away slow for 2 minutes, stand still for 2 minutes, walk away fast for 6 minutes

• walk toward slow for 4 minutes, stand still for 4 minutes, walk toward fast for 2 minutes

• walk away at increasing speed for 4 minutes, stand still for 4 minutes, walk away with increasing speed for for 2 minutes