Week 23 Extra Credit

The correct equation to calculate speed is

• distance/time
• time/distance
• distance x time
• distance/time²

Tags

NGSS.MS-PS3-1

Pick all of the following that are velocities.

• 4 km/s west

• 5 cm/h south

• 2 mph

• 8 cycles/year

• 5 m/s up

A plane flying 300 mph west toward California is an example of...

• Speed

• Velocity

• Acceleration

• Direction

Tags

NGSS.MS-PS3-1

Changing the speed and changing the direction of your bicycle are both examples of acceleration.

• TRUE
• FALSE

Tags

NGSS.MS-PS2-2

What is the average velocity of a cheetah that sprints 50 meters in 2 seconds? Include units.

How far will a car travel if it moves at a velocity of 60 km/h for 4 hours? Include units.

Scott drives a Jeep 12 km east, then 4 km north, then finally 3 km west. He traveled a total distance of:

• 5 km
• 10 km
• 13 km
• 19 km

A ping-pong ball rolls forward 6 meters, and bounces backward 3 meters. It traveled a total distance of:

• 9 meters
• 6 meters
• 3 meters
• 0 meters

Liza is swimming laps from one end of a 50 meter pool to the other. Going from one end to the other is considered one lap. If she swims four complete laps, which statement is TRUE?

• Her distance and displacement are both zero.
• Her distance is zero, but her displacement is 200 meters.
• Her distance is 200 meters, but her displacement is zero.
• Her distance and displacement are both 200 meters.

Ivan walks 10 meters west to the water fountain, then runs 2 meters east to his class to avoid a lockout. His displacement would be:

• 8 meters
• 8 meters, east
• 8 meters, west
• 12 meters