Question

Salmon often jump waterfalls to reach their
breeding grounds.
Starting downstream, 3.34 m away from a
waterfall 0.634 m in height, at what minimum
speed must a salmon jumping at an angle of
26.7
◦
leave the water to continue upstream?
The acceleration due to gravity is 9.81 m/s
2
.
Answer in units of m/s.

Answer 1

d = Vo^2*sin(2A)/g = 3.34 m.
Vo^2*sin53.4/9.81 = 3.34,
Vo^2*0.082 = 3.34,
Vo = 6.4 m/s.

Answer 2

Salmon often jump waterfalls to reach their
breeding grounds.
Starting downstream, 1.88 m away from a
waterfall 0.262 m in height, at what minimum
speed must a salmon jumping at an angle of
43.5
◦
leave the water to continue upstream?
The acceleration due to gravity is 9.81 m/s
2
.