Question

Please please please please solve the sum please please please

Answer 1

Answer:

....................................

Answer 2

We know momentum equals the product of mass and velocity of an object.

Before collision, the momentum of the moving object, having 1 kg mass, travelling with a velocity of 10 m s⁻¹, was 1 × 10 = 10 kg m s⁻¹.

Since the object whose mass is 5 kg was stationary, it's velocity was 0 m s⁻¹. Hence the momentum.

So the total momentum is 10 + 0 = 10 kg m s⁻¹.

But, according to the law of conservation of momentum, total momentum before collision = total momentum after collision. So, even after collision, the total momentum remains to be 10 kg m s⁻¹.

So, the velocity of the combined object after collision is none other than 10 / (1 + 5) = 10 / 6 = 1.67 m s⁻¹.