Author Question: A 1200-kg ore cart is rolling at 10.8 m/s across a flat friction-free surface. A crane suddenly ... (Read 116 times)

wrbasek0 · **on:** Jul 29, 2018

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

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

Question 2

If you exert 6 N across a distance of 2 m in 3 s you'll deliver a power of

A) 1 W.
B) 3 W.
C) 4 W.
D) 6 W.
E) more than 6 W