Question

class 9 chapter force and law of motion​

Answer 1

Explanation:

Total mass of the body is 300 g

One part's mass is 200 g

Another part mass will be 300 g-200 g=100 g

One part of mass 200g, it's speed is 12 m/s

Another part 100g it's speed is x m/s

According to law

m1v1+m2v2=0

:.200g×12 m/s + 100g×x m/s = 0

2400+100x=0

100x=-2400

x=-24m/s

So, the speed will be -24m/s or 24m/s towards west.