Question

a football player kicks a ball with a force of 50N . find the impulse on the ball if his foot stays in contact with the football for 0.01s

Answer 1

Answer:

Given:

A football player applies force of 50 N

Time for which foot and ball remains in contact = 0.01 sec.

To find:

Impulse on the ball

Concept:

Impulse is an index of force applied over a body for a certain period in time.

In classical mechanics, we get impulse as follows :

I = ∫ F(t) dt

Calculation:

Impulse = Force × (time)

=> Impulse = 50 × 0.01

=> Impulse = 0.5 N sec.

Final answer is 0.5 N sec

Answer 2

Answer:

${\boxed{\bold{Answer=0.05\:N\:s}}}$

E x p l a n a t i o n :

Given that,

• $\bold\red{Force\:on\:ball =50\:N}$
• $\bold\purple{Time=0.01\:s}$

To find,

• $\bold\green{Impulse\:on\:the\:ball}$

Formula used:-

${\boxed{\bold{Impulse = Force \times Time}}}$

$\rightarrow\tt Impulse = (50 × 0.01)\:N\:s \\ \\ \rightarrow\tt Impulse = 0.5\:N\:s$

$\therefore\bold{\underline{Impulse\:on\:ball = 0.5\:N \:s}}$