Question

The velocity of a particle moving with a uniform acceleration of 10 ms-1 after 5 s is 50 ms-1. Velocity of the particle in the beginning of 5th second is
A. 10 ms -1
B. 20 ms -1
C. 30 ms -1
D. 40 ms -1​

Answer 1

Answer:

a

Explanation:

because v + a / t = velocity , so

Answer 2

Answer:

EXCUSE ME,YOU GIVEN TIME AS T=5 SECS ,BUT THE ORIGINAL QUESTION IS T=4SECS

AND,SO,I DERIVED FOR T=5SECS

time,t=5 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'=5 s

we know,

V'=U+at'

=>V'=0+(10×5)

=>V'= 50 m/s

NONE OF THE ABOVE..!!