Question

A pebble thrown in vertically upwards with a speed of 20 ms-1

. How high will it be after 2

s? (Take g = 10 ms -2

)​

Answer 1

Answer:

It will reach 20 meters..

Explanation:

Initial velocity , u=20 m/s

Since, the ball is thrown upward, so 2nd equation of motion will be given by,

S=ut− 1/2gt square

⇒S=20×2− 1/2×10×2

=40−20=20 m