A 1200-Kg Ore Cart Is Rolling at 10 $858 \mathrm {~kg}$

question 102

Multiple Choice

A 1200-kg ore cart is rolling at 10.8 m/s across a flat friction-free surface. A crane suddenly drops $858 \mathrm {~kg}$ of ore vertically into the cart. How fast does the cart move just after being loaded with the ore?

• A)6.30 m/s
• B)3.80 m/s
• C)4.20 m/s
• D)5.70 m/s

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