Physics Speed and Velocity Review

Which car is accelerating?

• a car that is unmoving

• a car that rounds a curve at a constant speed

• a car that travels in straight line at a constant speed

• a car that is set to a constant speed of 60 miles per hour

Tags

NGSS.MS-PS2-2

What is the velocity in meters per second of a runner who runs exactly 110 m toward the beach in 63 seconds.

• 0.654 m/s toward the beach

• 1.74 m/s toward the beach

• 15.3 m/s toward the beach

• 7920 m/s toward the beach

Tags

NGSS.MS-PS3-1

Find the average speed of a horse that traveled East for 27 km in 4 hours.

• 6.75 km/h due East

• 67.5 km/h due East

• 67.5 km/h

• 6.75 km/h

In which situation is the acceleration of the car negative?

• The velocity of a car was 45 km/h at 2:00 pm and at 4:00 pm the velocity of the car was 85 km/h.

• The velocity of a car increased from 40 km/h to 75 km/h over 15 minutes.

• The velocity of a car reduced from 60 km/h to 25 km/h over one minute.

• The velocity of a car was 75 km/h over 4 hours.

Diego kicks a soccer ball from the end line. His fellow students time and mark the soccer ball as it moves down the field. The graph represents the ball's progress.

Based on the graph, during what time is the velocity constant and positive?

• from 0 to 1.5 seconds

• from 3.0 to 4.5 seconds

• from 4.0 to 5.0 seconds

• from 2.5 to 3.5 seconds

Tags

NGSS.MS-PS3-1

Zury travels from her house to her mom's office building. From there, she walks to school. After school, she walks to the library and then to a friend's house before finally ending back at home. Find Zury's total displacement.

• 3.15 miles W

• 1 mile N

• 0.4 miles E

• 0 miles

Which object is accelerating?

• A water bottle standing motionless on a desk.

• A whistle on a string whirled in a circle at a constant speed.

• A car driving straight along a a highway at a constant speed.

• A helicopter hovering perfectly still over a rescue mission.

Tags

NGSS.MS-PS2-2

Erik has been driving 65 mph for the last half hour. The truck next to him has been there for a while now, so Erik is correct to assume that the

• truck is parked.

• speed of the truck is 70 mph.

• speed of the truck is 65 mph.

• speed of the truck is 60 mph.

Which graph illustrates constant speed?

(Notice it's a SPEED time graph)

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Sally and Sue took a canoe trip down the Mississippi River. Their average speed for the trip south was 18 miles/hour. 18 miles/hour south is the girls'

• velocity

• distance

• speed

• acceleration