Question

If velocity of particle depends on time as v = ( 8t + 4 ) m/s . Then find position at t = 2 sec , if at t = 0 , position is x = 5 m ??​

Answer 1

Answer:

20m

Explanation:

v=(8t+4)m/s

at t = 2sec

v=(8*2+4)

v=20m

s=ut+½at²

s=2u+½a2*2

s=2u+2a. (1)

v=u+at

20=u+2a

10=u+a

a=10-u

then equation (1)

s=2u+(10-u) 2

s=2u+20-2u

s=20m

Answer 2

Answer:

the position will be at 29 m .

for more information, refer to the attachment.

Explanation:

hope it helps ✔✔