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#41 When two bodies collide elastically they interchange their velocity when their
A) Masses are equal
B) Velocity are equal
C) Accelerations are equal
D) None
Answer: A
#42 A person travels a distance x=30t+4AT2 where A is constant. The acceleration of a person is
A) 8Am/s2
B) A/8m/s2
C) A/4m/s2
D) 8m/s2
Answer: A
#43 When a force of 4N acts on a body of mass 2kg for 2 second) The rate of change of momentum is SL units:
A) 1
B) 2
C) +
D) 2
Answer: C
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