Print Calculator Periodic Table n 3 of 10 Sapling Learning Professional baseball

Question

Print Calculator Periodic Table n 3 of 10 Sapling Learning Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). A local team has drafted 44 25 mls (69.00 mph) Assuming the ball has a mas 0.434 g and has this speed just before a batter would make contact, how much kinetic energy does the ball have? an up-and-coming left handed pitcher who can consistently throw at Number ball How high wouild the ball need to be dropped from to attain the same energy (neglect air resistance)? The acceleration due to gravity is 9.81 m/s) Number O PrevousCheck AnswerNext Exit

Explanation / Answer

Part A

Vp = 100 mph = 44.70 m/s
vb = 44.25 m/s
mb = 0.1434 kg

KE = 0.5 * m * Vb^2
KE = 0.5 * 0.1434 * 44.45^2

KE = 141.66 J

Kball = 141.66J

Part B ) Height can be found out from potential energy

PE = m *g*Hmax
141.66 = 0.1434 * 9.8, * Hmax

Hball = 100.70 m

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