Question

A force acting on an object of mass 500 gm changes its speed from 200 cm/s to 0.2 m/s in the same direction. The change in momentum is ?

Answer 1

Hello Dear,

◆ Answer -

∆p = -0.9 kgm/s

● Explaination -

# Given -

m = 500 g = 0.5 kg

u = 200 cm/s = 2 m/s

v = 0.2 m/s

# Solution -

Initial momentum of the object is -

pi = m.u

pi = 0.5 × 2

pi = 1 kgm/s

Final momentum of the object is -

pf = m.v

pf = 0.5 × 0.2

pf = 0.1 kgm/s

Change in momentum is calculated by -

∆p = pf - pi

∆p = 0.1 - 1

∆p = -0.9 kgm/s

Hence, change in momentum of object is -0.9 kgm/s.

Hope this helps...

Answer 2

here is ur answer !!!