Salmon often jump waterfalls to reach their breeding grounds. starting downstream, 1.84 m away from a waterfall 0.251 m in height, at what minimum speed must a salmon jumping at an angle of 38.3 ◦ leave the water to continue upstream? the acceleration due to gravity is 9.81 m/s 2 .

4.73 m/s

Explanation:

R=1.84  m

H=0.251 m

∅=38.3°

For Horizontal Motion

aₓ=0      uₓ=ucos∅

x=uₓt+

R=ucos∅*t+0

1.84=ucos(38.3)*t

t=

For Vertical Motion

Y=Uy*t+

By putting value

0.251=usin∅()-()

0.251=sin(38.3)()-()

0.251=1.452-

u²=22.41

u=4.73 m/s

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.

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