Question

Calculate the acceleration of a body which starts from rest and travels 87.5m in 5 sec

Answer 1

$s = ut + \frac{1}{2} a {t}^{2} \\ \\ 87.5 = 0 \times 5 + \frac{1}{2} \times a \times {5}^{2} \\ \\ 87.5 = \frac{1}{2} \times a \times 25 \\ \\ a = \frac{87.5 \times 2}{25} \\ \\ a = 7 \: m {s}^{ - 2}$


Acceleration is 7 m/s^2

Answer 2

Answer:-

s=ut+ 21 at²

87.5=0×5+ 21 ×a×5 287.5= 21 ×a×2(5)

a= 25

87.5×2

a=7ms −2

•°• 7 m/s^2 is the Acceleration