Which of the following is (are) true?
1. When an object strikes a stationary object of equal mass, momentum of each object is separately conserved
2. Objects with the same velocity always have the same momentum
3. You are standing at rest on a horizontal frictionless floor. You might get yourself moving by throwing a shoe horizontally
A. 1 and 3 only
B. 2 and 3 only
C. 1 and 2 only
D. 2 only
E. 3 only
3 only is correct .
1) Momentum of the system is conserved not individual bodies . Hence Wrong
2) object may have same velocity but if masses are different the momentum is also different . P = mv . Hence wrong .
3) since the floor is frictionless there is no external force on the system in horizontal direction hence if a shoe is thrown horizontally forward he will experience an impulse horizontally backward. Hence right .
Which of the following is (are) true? 1. When an object strikes a stationary object of...
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