Constant Acceleration

What is the acceleration of the object during the first 2 seconds?

• 0.5m/s²
• 1.0 m/2²
• 1.5 m/2²
• 2.0 m/s²

Tags

NGSS.HS-PS2-1

initial v=5 m/s, final v=0 m/s, time is 20 seconds, how do you calculate the acceleration?

• (0-5)/20
• (5-0)/20
• 5/20
• 20/(5-0)

Tags

NGSS.HS-PS2-1

A car accelerates from a standstill to 70 m/s in 10 seconds.  What is the acceleration?

• 0.7m/s²
• 7m/s²
• 14m/s²
• none of the above

Tags

NGSS.HS-PS2-1

The SI unit for acceleration is

• mph
• ft/sec²
• m/s²

Tags

NGSS.HS-PS2-1

What is happening in this graph from point B to C?

• The object is going down a hill.
• The object is returning to its starting location.
• The object is slowing down.
• The object is staying still.

Tags

NGSS.MS-PS3-1

What is happening in the graph from point O to A?

• The object is moving SLOWLY
• The object is moving FAST
• The object is NOT moving
• The object is accelerating

Tags

NGSS.MS-PS3-1

What is happening in this graph from point A to B?

• The object is accelerating.
• The object is not moving.
• The object is decelerating.
• The object is moving at a constant speed.

Tags

NGSS.HS-PS2-1

The rate at which velocity changes is called 

• motion
• average speed
• instantaneous speed
• acceleration

Tags

NGSS.HS-PS2-1

If a car is traveling forward at 15 m/s, how fast will it be going in 1.2 seconds if the acceleration is -10 m/s²?

• 27 m/s
• 3 m/s
• -27 m/s
• -3 m/s

Tags

NGSS.HS-PS2-1

An object accelerates at 2  m/s². Assuming the object starts from rest, how much time does it need to accelerate to a speed of 16  m/s?

• 4 s
• 8 s
• 16 s
• 1/16 s

Tags

NGSS.HS-PS2-1