Question

Given that v = 5 + 8t (In SI units). The final velocity after 5 s is
a) 35 ms-1
b) 40 ms-1
c) 45 ms-1
d) 50 ms-1​

Answer 1

C is the answer .

V=5+8t , where t is the time
That is v=5+8*5
V=45 ms-1

Answer 2

Answer:-

(c) is the correct option.

Given:-

We have,

v = 5+8t

And time, t = 5s

To find:-

Velocity after 5seconds.

Solution:-

Put the value of time in the given equation, we get,

v = 5+8(5)

  = 5+40

  = 45$m^{-1}$