A 50 kg skateboarder is riding her 5 kg skateboard at 5 m/s to the north. She jumps backwards off the skateboard at -2 m/s. What is the velocity of the skateboard after the rider jumps off?

Drag each tile to the correct box. tiles bra i sequence

Rohit is trying to tune an instrument

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s