Forces T1L2A Acceleration

What are the units for acceleration?

• m/s²

• m

• sec

• s/m

A roller coaster's velocity at the top of a hill is 10m/s. 2 seconds later, it reaches the bottom of the hill with a velocity of 26 m/s. What was the acceleration of the coaster?

• 20 m/s

• 10 m/s2

• 16 m/s3

Acceleration is just when an object speeds up?

• True, only objects speeding up is acceleration

• False, objects speeding up and slowing down is acceleration.

Along with speeding up and slowing down, if you travel a constant speed you can be accelerating if you are __________ __________.

Choose all ways an object can accelerate.

• speed up

• slow down

• change direction

• stay at a constant speed and never change direction

Acceleration and velocity are the same thing.

• True, they both measure speed

• False, acceleration is the rate at which velocity changes. Velocity is the speed AND direction of an object.

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

• 1.6 m/s/s

• 1.6 m

• 2.5 m/s/s

Match the following

• 30 m/s²

• Velocity

• 30 m/s

• Speed

• 30 m/s east

• Acceleration

Tags

112.20.b.6.B

Which of the following best describes the velocity of an object?

30 ​ (a)  

• m/s east
• m/s
• m east
• m/s2

Tags

112.20.b.6.B

What is the difference between the velocity and the speed of an object?

• Velocity is the change in distance over time, while speed is the change in velocity over time.

• Velocity has a direction associated with it, while speed has no specific direction

• Velocity has no direction associated with it, while speed has a specific direction

• Velocity is the change in speed over time, while speed is the change in distance over time

Tags

112.20.b.6.B