Concept 2 Acceleration

An object is NOT accelerating if it is moving

• in a circle
• at constant velocity 
• at increasing speed
• only as influenced by gravity

A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 

• 6 m/s/s opposite the motion
• 2m/s/s in the direction of motion
• 8 m/s/s opposite the motion

An airplane accelerates down a runway at 3.20 m/s/s
for 8 s until it finally lifts off the ground.
Determine the velocity at take-off.

• 0.4 m/s
• 25.6 m/s
• 2.5 m/s

Tags

NGSS.MS-PS2-2

An airplane accelerates down a runway at 3.20 m/s/s for 8 s until it finally lifts off the ground.  The velocity of 25.6 m/s at liftoff is 

• instantaneous 
• average

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which direction is the object traveling between 12 and 16 seconds?

• forward

• backward

A car's v vs. t graph is shown. During which time interval does the car have its largest acceleration?

• 0-20 seconds

• 20-30 seconds

• 30-40 seconds

• 40-50 seconds

Tags

NGSS.MS-PS3-1

A car traveling at a speed of 20.0 m/s increases its speed to 30.0 m/s in 5.0 seconds. What is the acceleration of the car?

• -2 m/s/s

• 2 m/s/s

• -0.5 m/s/s

• 0.5 m/s/s

Tags

NGSS.MS-PS2-2

Which scenario or scenarios demonstrate acceleration? (Mark all that apply)

• A bicycle skidding to a stop

• A runner taking off from a stop.

• A car taking a corner at a constant speed.

• none of these

Which position-time graph matches the velocity-time graph?

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• 
• 

Tags

NGSS.MS-PS3-1

Which velocity-time graph matches the position-time graph below?

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•