Acceleration

Make sure to show all work and include units on all of your answers!

 

  1. An automobile claims that it can “go from 0 m/s to 25.0 m/s” in 7.5 s.  Calculate the auto’s acceleration.

 

 

 

  1. A dropped hammer had its speed increase from 0.0 m/s to 15.0 m/s in 4.04 s.  What would be the acceleration of the hammer?

 

 

 

  1. A fighter jet landing on an aircraft carrier must reduce its speed from 42.5 m/s to 0 m/s in 2.0 s.  What is the jet’s acceleration?

 

 

 

  1. A runner must increase her speed from 8.1 m/s to 8.6 m/s in the last 5 seconds of the race in order to win.  What is the acceleration of the runner?

 

 

 

  1. A rocket sled at a top speed of 88.9 m/s comes to a complete stop in .18 s.  What is the acceleration of the rocket sled?

 

 

 

  1. A child sleds down a hill with an acceleration of 2.82 m/s2.  If she starts from rest at the top of the hill and her final speed is 15.5 m/s at the bottom of the hill, how long does it take her to travel from the top to the bottom of the hill?

 

 

 

  1. Once the child in problem # 6 reaches the bottom of the hill, she continues on her sled until it stops.  If her initial speed was 15.5 m/s, her speed when she stops is 0 m/s and her acceleration is -.392 m/s2, how long will it take her to stop?

 

 

 

  1. Suppose a street racing car accelerates from rest to a final speed of 26.8 m/s. If the car has an acceleration of 6.89 m/s2, how long does it take the car to reach its final speed?

 

 

 

  1. The first commercial electric car had a top speed of 82.2 m/s.  If the car started from rest and accelerated 1.6 m/s2, how long would it take the car to reach its top speed?

 

 

 

  1. A ship approaches the dock with an acceleration of -.357 m/s2 and an initial speed of 16.98 m/s.  How much time does the ship need to come to a complete stop?

 

 

 

  1. A bicyclist accelerates at 0.89 m/s2 during a 5.0 s time period.  What is the change in the speed (Dv) of the bicyclist and the bicycle?

 

 

 

  1. A roller coaster accelerates up the first hill at 6.35 m/s2 for the first 7.0 seconds of the ride.  How much does the speed (Dv) of the roller coaster increase?

 

 

 

  1. A drag racer started at rest and accelerated at 16.5 m/s2 for 6.5 seconds.  What was the racer’s final speed? (Use the equation: Final v = at + initial v.)

 

 

 

  1. A freight train traveling with a speed of 18.0 m/s starts to slow down with an acceleration of -.33 m/s2.  What is the train’s speed after 23 seconds? (Use the equation: Final v = at + initial v.)

 

 

 

  1. A car accelerates 1.77 m/s2 over 6.00 seconds.  If the car’s final speed is 24.4 m/s, what is the initial speed of the car? (Use the equation: initial v = final v - at.)

 

 

 

 

 

 

 

 


                                                                   Dv = final v – initial v

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