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9/17 Today Make sure your problems and lab are turned in!SUB tomorrow

Ashely is approaching a stoplight moving with a velocity of 30.0 m/s. The light turns yellow, and Ashley applies the breaks and skids to a stop. If her acceleration is -8.00 m/s2, then determine the distance the car traveled while skidding.

WARM UP: to be done in your notebook

Acceleration and Motion Graphs

VELOCITY TIME graphs

This straight line on a v/t graph means that the speed is constant and is not changing over time.

A STRAIGHT LINE ON A V/T GRAPH DOES NOT MEAN THE OBJECT IS NOT MOVING. But is does mean there is NO ACCELERATION

• This graph shows decreasing speed. The moving object is decelerating.

• SLOWING DOWN

Summary of a v/t Graph

A

B

C

Compared to a d/t graphReturning to starting position

Not moving

A

B

C

Constant speed

Distance

• Describe motion:

• Determine acceleration 0-2 secs 8-10 secs

Determine displacement0-2 secs 2-6 secs

• Describe motion:

• Determine velocity 0-2 secs 8-10 secs

Determine displacement0-2 secs 8-10 secs

Distance

Describe the Motion Determine the Displacement

Determine the Acceleration

Describe the Motion Determine the Displacement

Determine the Acceleration