Question

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s–1 to 8 m s–1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.

NCERT Class IX
Sciences - Main Course Book

Chapter 9. Force and Laws of Motion

Answer 1

m = 100 kg
u = 5 m/s
v = 8 m/s
t = 6 sec.

Initial momentum = m u = 100 * 5 = 500 kg-m/s
Final momentum = m v = 100 * 8 = 800 kg-m/s

Force = change in momentum / time duration
         = (800 - 500) / 6 =  50 Newtons.

Answer 2

HELLO FRIEND HERE IS YOUR ANSWER,,,,,,,,


ANSWER :

Refer and consult to the following attachments for a detailed explanation and step by step solution with vital elaborations for certain formulas used into this query to arrive at a final conclusion that is,,,,


$\boxed{\bf{Initial \: Momentum = 500 \: Kg \: m/s}}$


$\boxed{\bf{Final \: Momentum = 800 \: Kg \: m/s}}$


$\boxed{\bf{Force = 50 \: N}}$


HOPE IT HELPS YOU AND CLEARS THE DOUBTS TO FIND THE INITAL AND FINAL MOMENTUMS AND FORCE EXERTED ON THE GIVEN OBJECT!!!!!!!