True or False: Acceleration only happens when objects speed up.

• True, only objects speeding up is acceleration.

• False, objects speeding up, slowing down, or changing direction at a constant velocity are all acceleration.

Choose all ways an object can accelerate.

• speed up

• slow down

• change direction

• stay at a constant speed and never change direction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

True or False? Acceleration and velocity are the same thing.

• True, they both measure speed.

• False, acceleration is the rate at which velocity changes.

Which ones of these involve a direction? Check all that apply.

• Acceleration

• Velocity

• Speed

• Net Force

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-4

NGSS.HS-PS2-5

Natalie drops her skateboard into a bowl speeding up from 0 m/s to 4 m/s in 2.5 s. What is her average acceleration?

• 4 m/s away

• 1.6 m/s2 away

• 1.6 m away

• 2.5 m/s2 away

Tags

NGSS.MS-PS2-2

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

When a car goes around a corner at 20 mph (constant speed), why do we say it  accelerates?

• The car is accelerating because of the velocity is constant

• Cars always accelerate when they are in motion

• The car is accelerating because it's changing direction

Acceleration is defined as:

• the time it takes for one place to move to another place. 

• the velocity of an object

• total distance divided by the time interval 

• the change in velocity of an object divided by time.

Where is a car NOT accelerating?

• A car shortly after a stoplight turns green.

• A car approaches a red light.

• A car is moving constantly ,at 80 km/h.

• A car turns on a curve at a constant speed.

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s^{2 away}

• 18 m/s^{2 away}

• 16 m/s^{2 away}

• 16 m/s away

Tags

NGSS.MS-PS2-2