Question

A body initially at rest travels a distance 100 m in 5 s with a constant acceleration. calculate

(i) Acceleration

(ii) Final velocity at the end of 5 s.​

Answer 1

(i)8m/s²(ii)40m/s

Step-by-step explanation:

according to the formula

½at²=s.

then substituting the data

½a•5²=100

a=8m/s²

v=at=8•5=40m/s

Answer 2

(I)

`{ \bf{s = ut + (1)/(2) a {t}^(2) }} \\ 100 = (0 * 5) + (1)/(2) * a * {5}^(2) \\ 200 = 25a \\ { \tt{acceleration = 8 \: m {s}^( -2) }}`

(ii)

`{ \bf{v = u + at}} \\ v = 0 + (8 * 5) \\ { \tt{final \: velocity = 40 \: m {s}^( - 1) }}`