Question

An object dropped from a cliff move down with an acceleration of 10m/s2.find it's speed after 2 second it was dropped?

Answer 1

Answer:

20m/s

Explanation:

Remember this shortcut:

After the end of each second the velocity will 10 more than the previous second

That is:

At 0th second: velocity =0m/s

After 1 sec:velocity=10m/s

After 2 sec:velocity=20m/s

So on...