Question

In what speed does an object fall, if after 10 seconds it hits the surface of Earth?​

Answer 1

98m/s

Step-by-step explanation:

Given parameters:

Time = 10s

Unknown:

Final speed = ?

Solution:

To solve this problem, we use the expression below;

v = u + gt

v is the final velocity

u is the initial velocity = 0m/s

g is the acceleration due to gravity = 9.8m/s²

t is the time

so;

v = 0 + 9.8 x 10 = 98m/s