Question

1. What is the average velocity across my bunny`s entire trip when she hops 6 meters to the east across the room in 11 seconds and then she takes another 12 seconds to hop back to her initial position?

2. Dean is slowing down on his skateboards. He starts at a speed of 5.5m/s and slows to 1.0m/s over a time of 3.0 seconds. What is Dean`s acceleration?

3. Megan hits a softball into the stands. She rounds the bases and crosses home plate at 27km/h. Her journey takes 6 seconds. What is Megan`s average acceleration?

Answer 1

question :-

2. Dean is slowing down on his skateboards. He starts at a speed of 5.5m/s and slows to 1.0m/s over a time of 3.0 seconds. What is Dean`s acceleration?

answer:-

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Answer 2

Given : bunny` hops 6 meters to the east across the room in 11 seconds and then she takes another 12 seconds to hop back to her initial position

To Find :  average velocity

Solution:

Average Velocity = ( displacement ) / Time

Displacement = Final position - Initial Position

hop back to her initial position

Hence  Final position  = Initial Position

=> Displacement = 0

=> Average Velocity = ( 0 ) / Time

=> Average Velocity =  0

V = U + at

U = 5.5 m/s

V = 1.0  m/s

t = 3 sec

Dean`s acceleration = a

=> 1.0  = 5.5  + a(3)

=> a  = - 1.5  m /s²

Dean`s acceleration =  - 1.5  m /s²

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