Problem 1

 

 

The driver of a car moving at m/s sees a red light and applies the brakes to skid to a stop.  If the brakes produce an acceleration of m/s2, what is the stopping distance of the car?

Stopping Distance = m

 

 

 

Problem 2

 

 

A dragster starts from rest and accelerates for a distance of m.  If the car has an acceleration of  m/s2, how long (time) was the car accelerating?

Time =   sec


 
 

Problem 3

 

 

A ball is moving at m/s to the right when it hits a wall.  The ball bounces off of the wall at m/s to the left.  If the ball was in contact with the wall for .025 sec, what was the acceleration of the ball?

Acceleration = m/s2

 

 

Problem 4

 

A car is moving at m/s when it sees the gates begin to come down at a railroad crossing that is 145 m away.  It takes 6.0 seconds for the gates to come down.  Can the driver make it past the gates in time if the maximum acceleration of the car is m/s2?

Your answer (yes or no) =

Your mathematical answer = m