Question

car start from station stationary position along a velocity 6 metre per second in 30 second then drive apply race and the velocity comes down 4 metre per second in next 30 second calculate the acceleration of bar in both
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Answer 1

Given,

Initial Velocity(u)=0m/s

Final Velocity(v)=6m/s

time(t)=30 secs

Acceleration=?

v=u +at

v=0+a(30)

6=0+a(30)

6-0=a(30)

6/30=a

a=1/5 m/s-2

a=0.2m/s-2

CASE II

Given,

Initial Velocity(u)=6m/s

Final Velocity(v)=4m/s

time(t)=5 secs

acceleration=?

v=u+at

4=6+a(5)

4-6=a(5)

-2/5=a

a=-0.4m/s-2