Topic 4 Lesson 2 Speed, Velocity and Acceleration

Vivian went on a bicycle trip through Germany with her family. One afternoon, she rode her bicycle along a long, flat road at a constant speed for 24 kilometers (km). The ride took her 1.2 hours (h). At what speed did she ride her bicycle?

• 0.05 h/km

• 20 mi/h

• 20 km/h

• 28.8 km•h

An antelope is being chased across the savannah by a hungry lion. The lion runs at a constant speed. How might the antelope use its velocity to escape the lion? Choose the three statements that apply.

• It can run at the same speed but change direction.

• It can run in the same direction but increase its speed

• It can both increase speed and change direction

• It can decrease speed but continue running in the same direction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Anna hits a golf ball, and it soars through the air toward the green. It travels in an arc over the ground. Which statement does not describe the ball’s acceleration before it stops?

• It increases speed

• It decreases speed

• It changes its overall direction

• It moves in the same direction

Tags

NGSS.MS-PS3-5

Carlos likes to bowl. He timed how long it took for his ball to travel the length of a an 18-m lane in the bowling alley. He plotted the final distance and time on a line graph. Carlos drew a line from this point to the origin of the graph.

How far down the lane was the ball after two seconds

• 6m

• 9m

• 12m

• 18m

Tags

NGSS.MS-PS3-1

Use the graph to find the average speed of the ball as it moves down the lane.

• 6m/s

• .16m/s

• 6km/s

• 54m/s

Tags

NGSS.MS-PS3-1