Question

A body starts with an initial velocity 'u' and moves with a uniform acceleration 'a'. When the velocity
has increased to 5u, the acceleration is reversed in direction but the magnitude remains the same. The
body will now return to the starting point with a velocity of
a)-u
b) -6
c) -7u
d)-9u
​

Answer 1

Explanation:

The changes that takes place in the body shape during adolescence are as follows::

In boys, muscles develop and shoulders become broaden.

In girls pelvic bones grow and hips broaden. Brests get enlarged ..