Speed and Acceleration KEY

1. 1. Calculate the speed for a car that Ryan drives 125 miles in 2 hours time.

• 62.5

• 62.5 miles/hour

• 250 mph

• 125 mph

Answer explanation

2. 2. Dania throws a baseball a distance of 60 feet in  0.5 seconds. How fast did she throw it? 

• 120 ft/s

• 30 ft/s

• 30

• 120

Answer explanation

Tags

NGSS.MS-PS3-1

1. 3. How  fast must a bird fly to travel a distance of 1,800 miles in 40 hours? 

• 72,000 mph

• 45 miles/hour

• 45 miles

• 45 hours

Answer explanation

4. 4. Astronauts orbiting the Earth on the International Space Station (ISS) do so every 90 minutes. One orbit around the Earth is equivalent to around 26,440 miles. How fast are they traveling in mph?

• 293.8 miles/hour

• 17,626.7 miles/hour

• not enough info

Answer explanation

This problem is a little harder because you have to convert 90 minutes to hours first, or convert after.

The work shown in pink shows us converting 90 minutes to hours first, then inputting it in the S=D/T equation. Because there are 60 mimnutes in 1 hour, you divide by 60 mins to convert to hours.

#4 BONUS CHALLENGE: How fast are they traveling in m/s? (SHOW WORK)

• 1609 m/s

• around 7878.7 m/s

• around 293.8 m/s

Answer explanation

Depending on rounding, answers will vary, but be close to 7,878.7 m/s

Tags

NGSS.MS-PS3-1

VELOCITY #1: Joshua rides an airplane to go to Hawaii, about 3,500 miles southwest from San Jose, California. If it takes 5 hours to get to Hawaii, what is the airplane’s velocity?

• 700 mph

• 700 mph southwest

• 0.0014 mph southwest

• 17,500 mph southwest

Answer explanation

VELOCITY #2: Akshaya rides a motorcycle traveling 10 km west in 3 hours. What is her velocity?

• 3.3 km/h

• 3.3 km/h west

• 30 km/h west

Answer explanation

ACCELERATION #1: A patriot missile is moving at 240 km/h east and travels to its maximum speed of 450 km/h east in 3 hours. What is the acceleration?

• 70 km/h

• 70 km/h² East

• 210 km/h² East

Answer explanation

ACCELERATION #2: Eunice’s car goes from 50 to 0 m/s in 5 seconds. What is her acceleration? 

• 10 m/s

• -10 m/s²

• 250 m/s²

Answer explanation

Tags

NGSS.MS-PS2-2

ACCELERATION #3: Zach’s boat goes from 84 km/h to 42 km/h in 0.2 hours. What is the acceleration?

• 210 km/h²

• -210 km/h²

• 84 km/h²

• -84 km/h²

Answer explanation

No direction given