A 2kg chunk of putty moving at 5 m/s collided with and sticks to a 3kg medicine ball initially at rest. What is the momentum of the putty before the collision

10 kg.m/s

Explanation:

Momentum is a product of mass and velocity, expressed as p=mv where m is the mass of an object, v is the velocity of an object and p denote momentum.

The principle of linear momentum states that the sum of momentum before and after collision are always equal.

Given mass of initially as 2kg and its velocitu as 5kg and taking forward direction as positive.

Momentum before collision will be

P=2kg*5m/s=10 kg.m/s

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.