Question

A ball is dropped from a height of 30m. How much time it will take to reach the ground

Answer 1

38 मीटर की ऊंचाई से गिरता है तो उसे लगती है 5 मिनट

Answer 2

Answer:

2.47

Step-by-step explanation:

Using law of motion: d=Vₐt+1/2*a*t²

Vₐ=Initial Velocity(0), t=time, a=acceleration due to gravity which is 9.8m/s^2

d=distance(30)

initial Velocity would be 0 because it starts at rest

30=0(t)+ 1/2*9.8m/s^2*t²

30=0+4.9m/s^2*t²(9.8*1/2=4.9)

6.12=t²(30/4.9=6.12)

t=2,47(sqrt of 6.12)

t=2.47