Question

A ball which is thrown vertically upwards
reaches a certain height and falls down.
(a)What will be the velocity of an object
when it reaches the maximum highest point?
(b)Name the force responsible for its
downward displacement.

Answer 1

Explanation:

The equation is given as v

2

−u

2

=2as.

where,

v = final velocity,

u = initial velocity,

a = acceleration due to gravity, 10m/s

2

,

s = h = height traveled.

Therefore, we can find u with above info. In this case, v = 0 at the top of the path.

0−u

2

=2×10×5=10m/s.

Hence, the initial velocity of the ball was 10 m/s.