Salmon often jump waterfalls to reach their breeding grounds. Starting downstream, 3.18 m away from a
waterfall 0.417 m in height, at what minimum
speed must a salmon jumping at an angle of
26.1◦ leave the water to continue upstream?
The acceleration due to gravity is 9.81 m/s2
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a coal burning power plant

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.