Please show every step. Thanks in advance! While in motion, a pitched baseball h
ID: 1286189 • Letter: P
Question
Please show every step. Thanks in advance!
While in motion, a pitched baseball has kinetic energy and linear momentum, (a) Can we say that it has a force that it can exert on any object it strikes? (b) Can the baseball deliver more kinetic energy to the object that it strikes than the ball carries initially? (c) Can the baseball deliver to the object it strikes more linear momentum than the ball carries initially? Explain your answers. You are standing perfectly still and then you take a step forward. Before the step your linear momentum was zero, but afterward you have some linear momentum. Is the principle of conservation of linear momentum violated in this case? Explain your answer. A mass m and a mass 3m are each initially at rest. They are both subjected to a constant force F that lasts for a time t. At the end of that time t: (a) Which mass has the larger linear momentum or are they the same?Explanation / Answer
1)
(a) It does not carry force, for if it did, it could accelerate itself.
(b) It cannot deliver more kinetic energy than it possesses. This would violate the law of energy conservation.
(c) It can deliver more momentum in a collision than it possesses in its flight, by bouncing from
the object it strikes.
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