(a) How is momentum different than force? (b) How Angular acceleration is different than linear acceleration? Explain with one example of each.

2. (a) What is energy conservation law? Explain with one example. (b) What is the conservation law of momentum? Explain with one example.
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5. Suppose that you (60 kg) started running from your home with a speed of 4 m/s to the North and then changed your speed to 6 m/s in the North. 
6. (a) What are your initial and final momentum? 
7. (b) What is change in momentum?
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10. A merry-go-round takes 40 sec to complete one round and has a beam of 4 m long. Find out (a) its angular velocity if it moves CCW, (b) its linear velocity, and (c) its radial acceleration.
12. A 50 kg mass is sitting on a frictionless surface. An unknown constant force pushes the mass for 2 seconds until the mass reaches a velocity of 3 m/s.

a) What is the initial momentum of the mass?

b) What is the final momentum of the mass?

c) What is change in momentum?

d) What was the impulse acting on the mass?

e) What is force acting on it?

2. Let's think that you are making a smoothie and running a blender with a speed of 10 rad/s and after 30 s, its speed is 25 rad/s. Find out how much angular acceleration the blender will have.
4. If a sports team of 5 players has masses of all players 60, 70, 80, 90, and 100 kg who are running with the speed of 5, 6, 7, 8, 10 m/s to East. Find out total momentum of the team.
6. Find out 
7. (a) the kinetic energy of a cat that is running with the speed of 10 m/s and has a mass of 10,000 g. 
8. (b) Potential energy of a rock that is held at the height of 500 cm above ground and has a mass of 800 g.
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