Acceleration is

• the rate at which velocity changes.

• the change in velocity

• the rate of change

• when you speed up only

In science, acceleration refers to

• increasing speed

• decreasing speed

• changing direction

• increasing speed only

What does it mean when a change in velocity is negative?

• The object is speeding up.

• The object is slowing down.

• The object is changing direction.

• The object is falling down.

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

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Tags

NGSS.HS-PS2-1

If velocity is measured in meters/second and time is measured in seconds, the unit of acceleration is

• m/s/s

• m/s²

• m/s

• m

Tags

NGSS.HS-PS2-1

If you are test-driving a Bugatti Veyron and you go from 0 km/s to 124 km/s in 3.7 seconds, what was your acceleration?

• 33.5 m/s²
• 0.03 m/s²
• -33.5 m/s²
• -0.03 m/s²

A plane lands on the runway and slows from 758 km/hr to 30 km/hr in 0.013 hours. What is the plane's acceleration in m/s²?

• 56,000 m/s²

• 17857 m/s²

• -17857 m/s²

• -56,000 m/s²

Tags

NGSS.HS-PS2-1

What is the final velocity of a rocket that travels for 4 seconds, has an initial velocity of 12 km/s and an acceleration of 2 km/s²?

• -4 km/s

• 10 km/s

• 20 km/s

• -10 km/s

Tags

NGSS.HS-PS2-1

Which of the following is not accelerating?

• a ball being juggled

• a woman walking at 2.5 m/s along a

  straight road

• a satellite circling Earth

• a braking cyclist