Science, asked by rajputjatin182, 1 year ago

10. Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of 6 ms-1 in 30s. Then he applies brakes such that the velocity of the bicycle comes down to 4ms-1 in the next 5s. Calculate the acceleration of the bicycle in both the cases.

Answers

Answered by Rohith2020
6
ANSWER

CASE I
Given,Initial Velocity(u)=0m/sFinal Velocity(v)=6m/stime(t)=30 secsAcceleration=?
v=u +atv=0+a(30)6=0+a(30)6-0=a(30)6/30=aa=1/5 m/s-2a=0.2m/s-2
CASE II
Given,
Initial Velocity(u)=6m/sFinal Velocity(v)=4m/stime(t)=5 secsacceleration=?
v=u+at4=6+a(5)4-6=a(5)-2/5=aa=-0.4m/s-2

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