Question

if the object is starting from its stationary position then u = ​

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

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Answer 2

Answer:

u=0

Explanation:

Because stationary means initially at rest so if object is initially at rest, then u(initial velocity) = 0 m/s