A 50.0-kg boy runs at a speed of 10.0 m/s and jumps onto a cart as shown in the figure.The cart is initially at rest.If the speed of the cart with the boy on it is 2.50 m/s, what is the mass of the cart?
A) 150 kg
B) 175 kg
C) 210 kg
D) 260 kg
E) 300 kg
Correct Answer:
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