LC 2.2 Speed vs Velocity same as LC

(LT #2) Students performed multiple trials of a tennis ball rolling across the floor and recorded their observations in the table. Select the trial with enough information to calculate the velocity of the tennis ball.

• Trial 1
• Trial 2
• Trial 3
• Trial 4

Tags

NGSS.MS-PS2-2

(LT #2) The table below represents the data from an experiment to determine the speed of a toy car on a straight track. The car is moving at a constant speed in a forward direction. Which value belongs in the cell marked with an x?

• 300
• 35
• 400
• 450

Tags

NGSS.MS-PS3-1

(LT #3) Arnold takes a bus after school to a recreation center. The diagram represents the route that the bus takes. If the trip takes 20 minutes, what is the average velocity of the bus?

• 0.5 miles per minute
• 0.5 miles per minute southeast
• 2 miles per minute
• 2 miles per minute southeast

(LT #3) Mrs. Jones walks 4m east, 2m south, 4m west, and 2m north. What is the total distance she walked?

• 0 m
• 8 m
• 12 m
• 12 m/s

Speed is determined calculated using the distance something traveled divided by the time it took to travel that distance. d/t

• False
• True

Tags

NGSS.MS-PS3-1

Velocity is when you calculate an object's speed and add in what direction the object is moving. We call this a velocity vector.

• True
• False

Which of the following represents the velocity of an object?

• A. 25 m/s west
• B. 25 m/s
• C. West
• D. 25

Four horses are racing around a horse track 2.0 kilometers in length. The horses travel at a constant speed. The table below shows the finish time for each horse. What was the velocity of the winning horse when it crossed the finish line? Round to the nearest whole number.

• A. 71 km/h south
• B. 71 km/h west
• C. 61 km/h north
• D. 57 km/h south

These horses are moving at a constant speed but not at a constant velocity. Why?

• A constant velocity would mean maintaining a constant speed and direction, and these horses are not maintaining a constant speed.
• The horses as they move in a circle are changing direction and therefore their velocity changes.
• Velocity and speed are the same. Because the speed is constant, the velocity must also be constant.

A runner wanted to see if his speed would change on different track surfaces. He ran at a comfortable pace on grass, gravel, concrete, and turf. He measured the amount of time it took to run 1,000 meters. What is the average speed of the fastest track? Round to the nearest whole number.

• A. 161 m/min
• B. 175 m/min
• C. 200 m/min
• D. 182 m/min