The velocity of a particle moving with a uniform acceleration of 10ms-2 after 5s is 50ms-1 . its velocity at t=4s is
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42
time,t=4 s
acceleration, a=10m/s^2
last velocity,V = 50 m/s
we know,
V=U+at
=>U=V - at
=>U =50 - (10×5)
=>U = 0 m/s
again, t'=4 s
we know,
V'=U+at'
=>V'=0+(10×4)
=>V'= 40 m/s
acceleration, a=10m/s^2
last velocity,V = 50 m/s
we know,
V=U+at
=>U=V - at
=>U =50 - (10×5)
=>U = 0 m/s
again, t'=4 s
we know,
V'=U+at'
=>V'=0+(10×4)
=>V'= 40 m/s
Answered by
5
Answer:
option d = 40ms-1
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