Question

An object is dropped in an unknown planet from height 50m , it reaches the ground in 2 s . The acceleration due to gravity in this unknown planet is

Answer 1

answer is ..........,.,.,.,,..,25 m/s2

Answer 2

Given - Height and time

Find - Acceleration due to gravity

Solution - We will be using the equation of motion-

S = ut + 1/2at². In the formula, S is displacement, u is initial velocity, a is acceleration and t is time.

The initial velocity will be 0, so ut = 0.

Keep the values in formula to find the acceleration due to gravity.

$50 = \frac{1}{2} \times a \times {2}^{2}$

Taking square

$50 = \frac{1}{2} \times a \times {4}$

Performing division

$50 = a \times {2}$

Shifting 2 to other side of equation

$a = \frac{50}{2}$

Performing division

$a = 25$ m/s².

Acceleration due to gravity of unknown planet is 25 m/s².