Salmon often jump waterfalls to reach their
breeding grounds.
starting downstream, 1.87 m away from a
waterfall 0.37 m in height, at what minimum
speed must a salmon jumping at an angle of
32.7
◦
leave the water to continue upstream?
the acceleration due to gravity is 9.81 m/s
2
.
answer in units of m/s.

Determine the time it takes for a satellite to orbit the earth in a circular "near-earth" orbit. the definition of "near-earth" orbit is one which is at a height above the surface of the earth which is small compared to the radius of the earth, so that you may take the acceleration due to gravity as essentially the same as that on the surface. does your result depend on the mass of the satellite?