Salmon often jump waterfalls to reach their breeding grounds.
Starting downstream, 2.61 m away from a
waterfall 0.277 m in height, at what minimum
speed must a salmon jumping at an angle of
39.3° leave the water to continue upstream?
The acceleration due to gravity is 9.81 m/s.
Answer in units of m/s.

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?