Acceleration

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

• A car speeds up after a stoplight turns green.

• A car slows down as it approaches a red light

• A car with the cruise control set at 80 km/h going down a straight highway

• A car turning a curve at a constant speed

The SI unit for acceleration is

• mph

• ft/sec

• m/s²

• m/s

When are you undergoing an acceleration in a car? (Choose all that are correct)

• speed up

• slow down

• make turns

• constant speed

Tags

NGSS.MS-PS2-2

A negative acceleration means that your object is _____. 

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

A positive acceleration means that your object is _____.

• not accelerating

• not moving

• speeding up

• slowing down

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 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

The equation for acceleration is...

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

Match the following graphs to the right description.

• No acceleration (constant speed)

• 
• Slowing down

• 
• Speeding up

• 

What is happening at segment B?

• no motion/object at rest

• constant speed

• acceleration

Tags

NGSS.MS-PS3-1