Module 7 Review - Part 1 (Speed, Velocity, Acceleration)

On this distance-time graph, which line represents an object with faster speed?

• Red (steep)

• Blue (shallow)

Tags

NGSS.MS-PS3-1

Which of the following is not a unit used to describe an object's velocity?

• 30 km/h North

• 5 mph in reverse

• 2 m/s

• 2 miles/min SW

Sam is slowing down on his skateboard as he goes up a hill. He starts at a velocity of 13 m/s and slows to 4 m/s over a time of 2 seconds. What is Sam’s acceleration in m/s²?

Acceleration = (V_f-V_i)/t

• 4.5

• -4.5

• 8.5

• -2.75

Describe the object's motion on this distance-time graph.

• The object is moving quickly

• The object is moving slowly

• The object is slowing down to a stop

• The object is not moving.

Tags

NGSS.MS-PS3-1

A line with a positive slope (going up from left to right) on a distance-time graph represents

• an object's speed as it moves away from its origin

• an object's speed as it moves back toward its origin

A plane travels 400,000 meters in 9000 seconds. What was its speed?

speed = d/t

• 44.44 m/s

• 44.44 mph

• 0.0225 m/s

• 0.0225 mph

Which scenario best fits this graph?

• A car is sitting still at a stoplight.

• A car is braking for a light that just turned red.

• A car is traveling at a constant speed.

• A car is accelerating after a stoplight turns green.

Tags

NGSS.MS-PS3-1

Which of the following is NOT true about speed?

• Includes a direction

• The change of position per unit of time

• Measured by dividing distance by time

• Always a positive number

Tags

NGSS.MS-PS3-1

If a car travels 200 m in 20 seconds, how fast is it going?

speed = d/t

• 0.1 m/s

• 0.1 mph

• 10 m/s

• 10 mph

What scenario best fits this graph?

• A runner crosses the finish line and slows down to a stop.

• A runner speeds up as another person attempts to pass.

• A spectator is standing next to the finish line cheering on the runners.

• A runner picks up speed as she approaches a downhill stretch.