A 60 kg student on ice skates stands at rest on a frictionless frozen pond holding a 10 kg brick. He throws the brick east with a speed of 18 m/s. What is the resulting velocity of the student?

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?