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## Calculations with Acceleration

Read and solve each of the following problems.  Be sure to show all of your work (given, equation, work, and answer with the proper units)

Acceleration Equations:

1.  A skier takes off from the top of the ski run and reaches a speed of 24 m/s in 4 seconds.
What is the skier’s acceleration? (Assume that starting velocity = 0)

Given:                                                                   Equation & Work:

vi =
vf =
t =
a =

2.  A child on a skateboard is traveling at a velocity of 8 m/s down a hill. At the bottom of the hill, he slows down and comes to a stop in 4 seconds. Calculate the sled’s deceleration

Given:                                                                   Equation & Work:

vi =
vf =
t =
a =

3. A girl is walking a dog at a pace of 2 m/s. When the dog sees a squirrel it takes off running and reaches a speed of 5 m/s in 3 seconds. What was the dog's acceleration?

Given:                                                                   Equation & Work:

vi =
vf =
t =
a =

4.   A skydiver jumps out  of a plane and as he falls he has an acceleration of 10 m/s2. How many seconds will it take to reach a speed of 30 m/s?

Given:                                                                   Equation & Work:

vi =
vf =
t =
a =

5. A family of ducks is swimming in a pond at a speed of 3 m/s when a gust of wind hits them. By the time they reach the other side of the lack, the ducks are moving at a speed of 7 m/s. How long did it take for them to cross the lake if they accererated at a rate of 1 m/s2

Given:                                                                   Equation & Work:
vi =
vf =
t =
a =