A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts on the player while turning is :

Question

Aicharya · Accepted Answer

Let the speed of the football player be, $v$ .

Then, we can write

${\vec{v}}_{i} = v (- \hat{j})$ and ${\vec{v}}_{f} = v (\hat{i})$ .

We can write force as,

$\vec{F} = m \vec{a} = m \frac{{\vec{v}}_{f} - {\vec{v}}_{i}}{t} = \frac{m v}{t} (\hat{i} + \hat{j})$

Clearly, the direction of the force acting will be towards north-east.

A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent.…

Solution