Calculate the speed at which a $0.723 - \mathrm { kg }$ object has the same momentum as a $1.30 - \mathrm { kg }$ object that is moving $0.515 \mathrm { c }$.
A) $0.592 c$
B) $0.712 c$
C) $0.734 c$
D) $0.981 c$

Question

Quizplus · Accepted Answer

The momentum of an object is given by the product of its mass and velocity. Since the momentum of the two objects is the same, we can write:$$0.723 \mathrm { kg } 	imes v = 1.30 \mathrm { kg } 	imes 0.515 \mathrm { c }$$Solving for v, we get:$$v = \frac{1.30 \mathrm { kg } 	imes 0.515 \mathrm { c }}{0.723 \mathrm { kg }} = 0.734 \mathrm { c }$$Therefore, the correct answer is C.

Calculate the Speed at Which A 0.723−kg0.723 - \mathrm { kg }0.723−kg

Calculate the Speed at Which A $0.723 - \mathrm { kg }$