Question

A motorcycle moves according to the velocity versus time graph shown. find the average acceleration of the motorcycle during each of the following segments of the motion (a) A. (b) B and (c) C

Answer 1

For A

vi=initail velocity=0 m/s

vf=final velocity=|0 m/s

t=time=5-0=5s

To calculate the acceleration we have the next formula

`a=(v_f-v_i)/(t)`

we substitute the data

`a=(10-0)/(5)=2\text{ m/s}^2`

For B

vi=10 m/s

vf=10m/s

t=15-5=10 s

`a=(10-10)/(10)=(0)/(10)=\text{ 0 m/s}^2`

For C

vi=10m/s

vf=5 m/s

t=25-15=10 s

`a=(5-10)/(10)=(-5)/(10)=-(1)/(2)=-0.5\text{ m/s}^2`

ANSWER

for A

a=2 m/s^2

for B

a=0m/s^2

for C

a=-0.5 m/s^2