Motion & Acceleration Quiz-B

A ball of clay is thrown at a wall at a velocity of 28.0 m/s.  After it hits the wall, it takes 0.020 s to stop.  What is the acceleration of the clay when it hits the wall?

• 1400 m/s²
• -1400 m/s₂
• 0.56 m/s²
• -0.56 m/s²

Tags

NGSS.HS-PS2-1

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

Acceleration is defined as the CHANGE in 

• time it takes for one place to move to another place. 
• velocity of an object.
• distance divided by the time interval 
• velocity divided by the time interval 

Tags

NGSS.HS-PS2-1

Acceleration only takes place when things speed up. 

• True
• False

Tags

NGSS.HS-PS2-1

In each of the following cases, determine where the car has no acceleration ?

• A car shortly after a stoplight turns green.
• A car approaching a red light
• A car with the cruise control set at 80 km/h
• A car turning a curve at a constant speed

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

What is acceleration?

• How fast something is going

• The magnitude of a force

• Rate at which speed or direction changes

• Direction of a force

Objects will accelerate towards Earth at a rate of

• 1.6 m/s²

• 9.8 m/s²

• 9.8 N

• 1.6 N

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A negative acceleration means that your object is _____. 

• not accelerating
• not moving
• speeding up 
• slowing down 

A correct measure of velocity would be

• 300 m/hr

• 7,800 m/sec

• 40 kn/hr north

A car is traveling at a velocity of 70 km/hr west. To have the same velocity, another car would have to travel at

• the same speed

• the same speed and in the same direction

• the same speed in a different direction