Question

7. A cracker of mass 100 g explodes into two pieces of equal mass. Show that these two pieces of the cracker
fly in opposite direction.
8. An iron sphere of mass 1 kg. is dropped from a height of 10 m. If the accelera tion of sphere is 9.8 ms
calculate the momentum transferred to the ground by the ball.
9 A boy of mass 40 kg jumps with a horizontal velocity of 5 ms onto a stationary cart with frictionless
wheels. The mass of the cart is 3 kg. What is his velocity as the cart starts moving? Assume that there is no
external unbalanced force working in horizontal direction.
10. Derive the mathematical formula of conservation of momentum. A body of mass 300 g kept at rest breaks
into two parts due to internal forces. One part of mass 200 g is found to move at a speed of 12 m/s towards
the east. What will be the velocity of the other part?​

Answer 1

Answer:

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