Will rate lifesaver to whoever can explain howto solve problems in detail so tha

Question

Will rate lifesaver to whoever can explain howto solve problems in detail so that it’s completelyunderstandable. Thank you for your time!
1)
A 55.0 kg professional diver performsa dive from a platform 10 m above the water surface. Find theaverage impact force she experiences in her collision with thewater if the collision lasts for 1.20s.
1 N
2) A 75.0 kg stunt man jumps from a balcony and falls28.5 m before colliding with a pile ofmattresses. If the mattresses are compressed 0.850 m before he is brought to rest, what is theaverage force exerted by the mattresses on the stuntman?
1 N
Will rate lifesaver to whoever can explain howto solve problems in detail so that it’s completelyunderstandable. Thank you for your time!
1)
A 55.0 kg professional diver performsa dive from a platform 10 m above the water surface. Find theaverage impact force she experiences in her collision with thewater if the collision lasts for 1.20s.
1 N
2) A 75.0 kg stunt man jumps from a balcony and falls28.5 m before colliding with a pile ofmattresses. If the mattresses are compressed 0.850 m before he is brought to rest, what is theaverage force exerted by the mattresses on the stuntman?
1 N

Explanation / Answer

1)The mass of the professional diver is m = 55.0 kg
The height of the platform is h = 10 m The speed with which the diver hits the water is v =(2gh)1/2 where g = 9.8 m/s2 The momentum of the diver is P = m * v The average impact force she experiences in her collision withthe water if the collision lasts for 1.20 s is Favg = (P/t) where t = 1.20 s 2)The mass of the stunt man is m = 75.0 kg The speed of the stunt man before colliding with a pile ofmattresses is u = (2gh)1/2 where g = 9.8m/s2 We know from the relation v2 - u2 = 2ah1 where v = 0 and h1= 0.850 m or a = (u2/2h1) The time taken by the stunt man to come to rest is v = u + at or 0 = u + at or t = (u/a) The average force exerted by the mattresses on the stuntmanis Favg = (m * u/t) where v = 0 and h1= 0.850 m or a = (u2/2h1) The time taken by the stunt man to come to rest is v = u + at or 0 = u + at or t = (u/a) The average force exerted by the mattresses on the stuntmanis Favg = (m * u/t)

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