Question

State Newton’s second law of motion. A man throws a ball of mass 0.4
kg vertically upward with a velocity of 10 m/s. What will be its initial
momentum? What would be it’s momentum at the highest point of its
reach?

Answer 1

NEWTON SECOND LAW OF MOTION ➡

It state that rate of change of momentum is directly proportional to force applyied.

$\frac{dp}{dt}$=F.........(a)

Here $\frac{dp}{dt}$ is rate of change of momentum with respect to time and F is force.

Differentiate equation (a)

$\frac{mdv}{dt}$=F

Since dp=mdv and$\frac{dv}{dt}$=a

equation become

F=ma

where m is mass a is Acceleration of body.