8th Grade 2nd 9 Weeks Review

A car travels 300 km in 6 hours. What is the average speed of the car (in km/hr)?

• 0.02 km/hr
• 1,800 km/hr
• 50 km/hr
• 50 km

What is the speed of a jet plane that flies 7200 km in 9 hours ( in km/hr)

• 800 km/hr
• 80 km/hr
• 800 hrs
• 64,800 km/hr

A storm is moving toward your house at a speed of 20 km/hr.  It is now 60 km away from your house.  In what time will the storm reach your house?

• 0.3 hours
• 1200 hours
• 3 km
• 3 hours

A rocket is launched from the launch pad at a speed of 700 km/hr.  How far will the rocket have traveled after 1.0 hour?

• 699 km
• 700 km
• 350 km
• 700 hours

A truck travels down the highway at a speed of 110 km/hr.  How long does the trip last if the truck covered 2200 km?

• 0.05 hours
• 20 hours
• 2,090 hours
• 242,000 hours

A bus starts from rest and accelerates to 14 m/s in 4 s. What is the average acceleration of the bus?

• 3.5 m/s2

• 5.9 m/s2

• 10.5 m/s2

• 24 m/s2

Tags

NGSS.MS-PS2-2

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Tags

NGSS.MS-PS2-2

A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.

• 30 m/s
• 24 m/s²
• 9 m/s²
• 81 km/hr

Tags

NGSS.MS-PS2-2

A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

• 2.2m/s²
• 7.0m/s²
• 5.7m/s²
• 70m/s²

Tags

NGSS.HS-PS2-1

A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?

• -7.5 m/s
• -7.5 m/s²
• -0.5 m/s²
• 7.5 mi//hr

Tags

NGSS.MS-PS2-2