Question

an object is dropped from a certain height. After 2 seconds the velocity of the object will be (taken g = 9.8 metre per second square)​

Answer 1

Answer:

19.6m/sec

Explanation:

Given:

Initial velocity, u = 0m/sec. (as object is dropped with no initial velocity. It is starting velocity)

Time taken by object to reach the ground, t= 2seconds

Acceleration due to gravity, g= 9.8metre per second square

To find:

Final velocity, v= ??

Method to find final velocity:

From the first equation of motion which is

v=u+at

v=0+(9.8*2)= 19.6 m/sec

Therefore velocity of object after 2 seconds will be 19.6 m/seconds