Review Quiz 4

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-PS2-1

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

Why does a car accelerate as it round a corner at a constant speed?

• Its direction changes
• It doesn't
• It slows down
• Its speeds up  

Acceleration only takes place when things speed up. 

• True
• False

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

What happened during C to D point?

• not moving
• increasing speed at a constant rate
• moving at a constant speed
• moving at 0 m/s² acceleration

Tags

NGSS.MS-PS3-1

Why is momentum considered to be a vector quantity?

• Momentum has to indicate both magnitude and direction.

• Momentum has to have a positive value.

• Momentum has to be calculated using speed.

• Momentum has a quantity but not a unit.

Tags

NGSS.HS-PS2-2

Which of the following is the formula for momentum?

• p = mv

• M = mv

• F = ma

• g = mc²

Tags

NGSS.HS-PS2-2

Which of the following is the unit for momentum?

• kg·m/s

• kg·m

• kg·m/s²

• Momentum has no unit.

Tags

NGSS.HS-PS2-2

A stationary object has a small amount of momentum.

• True

• False