Homework Statement
Jess, who weighs 50 kg, is riding a 10 kg skateboard. The skateboard and Jess are moving east at 5 m/s. Jess falls off the skateboard and hits the ground at 4 m/s east, relative to the ground. Calculate the velocity of the skateboard.
Homework Equations
The...
A quantity of water equal to 2.5 x 1010 cc falls from a rain cloud that is
1000 m high. If this rain falls in just 1 hour, how much power is generated?