PHYS 3.1 Formative

The rate at which velocity changes with time.

• velocity

• position

• acceleration

• jerk

Tags

NGSS.HS-PS2-1

Acceleration occurs when an object...

• speeds up

• slows down

• changes direction

• is at rest

Tags

NGSS.HS-PS2-1

An object speeds up from 1 m/s to 4 m/s over 3 seconds. What is the object's acceleration during that time?

• 3 m/s²

• 1 m/s²

• 4 m/s²

• 1 m/s

Tags

NGSS.HS-PS2-1

How would acceleration be shown on a position-time (x-t) graph?

• straight line

• curved line

How would constant acceleration be shown on a velocity-time (v-t) graph?

• curved line

• straight line

• horizontal line

An object with positive (+) velocity and positive (+) acceleration would be...

• speeding up

• slowing down

• traveling at a constant speed

T or F: An object can be accelerating even if it has constant speed.

• True

• False

T or F: Negative acceleration always means an object is slowing down.

• True

• False

A skateboarder starts from rest and accelerates down a ramp with a constant acceleration of 2.1 m/s². What is the speed (in m/s) of the skateboarder 2.5 s after she starts? values only

(a)  

Tags

NGSS.HS-PS2-1

At the start of a race, a sprinter accelerates out of the starting blocks and reaches a speed of 3.8 m/s in 1.8 seconds. What was the sprinter's acceleration (in m/s²)?

(a)  

Tags

NGSS.HS-PS2-1