which is not a possible unit for distance?

• meters
• feet
• miles
• min

A heavy object and a light object are dropped from the same height. Which will hit the ground first? (assume they're in a vacuum with no air)

• Heavier object

• Lighter object

• Both will hit at the same time

Tags

NGSS.MS-PS2-4

If you drop a 1000-kg black ball from a height of 10 meters and a 1-kg gray ball from a height of 25 meters, which will hit the ground first? (assume no air resistance)

• 1000-kg Black Ball

• 1-kg Gray Ball

• Both will hit at same time.

Tags

NGSS.MS-PS2-4

"g" is defined as

• acceleration of all objects in motion

• acceleration of objects moving vertically

• acceleration of gravity

• none of the above

Tags

NGSS.HS-PS2-4

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

How much time does it take for a car travelling at 65 miles/hour to travel 300 miles?

• 4.6 hours
• 0.22 hours
• 19,500 hours
• none of the above

If a car is traveling forward at 15 m/s, how fast will it be going in 1.2 seconds if the acceleration is -10 m/s/s?

• 27 m/s
• 3 m/s
• -27 m/s
• -3 m/s

Tags

NGSS.MS-PS2-2

free fall is?

• falling and the only thing acting on you is air resistance
• falling and the only force acting on you is gravity

Tags

NGSS.MS-PS2-2

1.  How far will a train moving at 5.7 km/min go in 45 minutes?

• 256.5 km
• 0.12 km
• 7.89 km

How much time would it take for an object to fall 4.7 meters? (free fall)

• 0.959 s
• 4.79 s
• 0.979 s