The velocity acquired by a body moving with uniform acceleration is 30 M per second in 2 seconds and 60 metre per second in 4 seconds the initial velocity is ?
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Answered by
361
now,
at t = 2s, v = 30m/s
at t = 4s, v = 60 m/s
so, acceleration
a = dv / dt = (60-30) / (4-2)
thus,
a = 30/2 = 15m/s
now,
v = u +at
initial velocity will be calculated using
u = v - at
after two seconds
u = 30 - 15 × 2
thus, initial velocity
u = 0m/s.
hope this help...
at t = 2s, v = 30m/s
at t = 4s, v = 60 m/s
so, acceleration
a = dv / dt = (60-30) / (4-2)
thus,
a = 30/2 = 15m/s
now,
v = u +at
initial velocity will be calculated using
u = v - at
after two seconds
u = 30 - 15 × 2
thus, initial velocity
u = 0m/s.
hope this help...
Hk060901:
Bt bro the options are
A)4m/s B)0m/s C)2m/s D)10m/s
ok
i will see that what mistake i have done
K bro bt u did ur best n thnx for ur help
welcome
Answered by
53
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Explanation:here you go
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