Assignment:
An object sitting on a smooth surface is given an impulse (force) to start from rest and reached a veloctiy of 5m/sec in 2 seconds.
1. What is the mass of the object if the applied force was 20 N.
2. What is the change in momentum.
3. At the time given above the object is travelling towards the northwest with an angle of 45 degrees with the horizontal and hit another object mass of 5 kg, which was travelling at 10m/sec toward the east and combined together. what is the final velocity and which direction? hint use the law of conservation of momentum and treat the momentum as vectors.