The solution to the problem is as follows:
person's speed when water is hit = V = √2gh = 7.65 m/s
person's momentum when water is hit = 7.65m = 489.6 kgm/s
avg speed under water = 7.65/2 = 3.825 m/s
time to stop under water = 1.14/3.825 = 0.30 s
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Favg = change in momentum/time to stop = 489.6/0.30 ≈ 1632 N ANS
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Answer:
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<em><u>1)A)2)A)</u></em>
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Answer:
Q = 2687130 J
Explanation:
m = mass of block of ice = 5 kg
= Initial temperature of ice block = - 27 °C
= final temperature of water = 35 °C
= specific heat of ice = 2108 J/(Kg °C)
= Latent heat of fusion of ice = 334000 J/kg
= specific heat of water = 4186 J/(Kg °C)
Heat added is given as