Question

a stone is dropped from 45 m height of tower. it takes 3 second to reach ground. calculate acceleration due to gravity

Answer 1

Answer: 10 m/s^2

Step-by-step explanation:

So I think the answer might be 10 m/s^2, following the equation: d=1/2a(t^2).

Variables:

d=45(m)

t=3(s)

a=?

We know the variables "d" and "t" in the equation and have to solve for "a".

So when we plug it in it's:

45=1/2(a)(3^2)

45=1/2(a)(9)

45=4.5(a)

10=(a)