uhha deciies m in the bearis on the side of his barn. He leans a ladder against

Question

uhha deciies m in the bearis on the side of his barn. He leans a ladder against the side of the am ani dimis un He then glaces his hammer on a rung in the ladder. The rung is broken ough s e hammer fails w the ground It hits the ground moving at a speed of 6 63 mis. Bw hgh ws the hammer when it started to fall? Einw fust wmuit he hunmer have heen moving when it hit the ground if Bubba had uts drie n he int ore Sy food for his chickens. To save money, Bubba buys bulk in_pt st atiitti tu k h. a bed that can carry 275mr' ofca go with the coveron it to te vind fm owing away the feed as he drives Bubba buys 2 truck loads worth of i i Ertet inc to put tte find into cylindrical plastic tubs when he gets home to keep --nfit. Eah tih adiameter af 82.5 cm and aheight of 115cm Determine how

Explanation / Answer

a] The hammer's speed initially is: u = 0 m/s

v = 6.63 m/s

acceleration = g

use, v2 = u2 + 2gH

H = 6.632/(2g) = 2.243 m

this is how high the hammer was.

b] if H' = 2H = 4.485 m

v = [2gH']1/2 = 9.376 m/s

this is how fast the hammer would be at the bottom if it was dropped from twice the initial height.

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