Secure https://se itemView?assignmentProblemiD- 785960748offset next Ch 09 HW Pa

Question

Secure https://se itemView?assignmentProblemiD- 785960748offset next Ch 09 HW Par2 Problem 9.23 Problem 9.23 Part A A 55-kg acrobat must jump high and land on his brother's shoulders. To accomplish this, he leaps from a crouched position to a height where his center of mass is 1.20 m above the ground. His center of mass is 400 mm above the ground in the crouch and 900 mm above the ground when his feet leave the ground. What is the average force exerted on him by the ground during the jump? Express your answer with the appropriate units Far. 8.6× 102 N St My Answers Give Up Submit Correct Part B What is his maximum speed? Express your answer with the appropriate units 3.95 m Submit My Answers Sive Up Incorrect; Try Again; 5 attempts remaining

Explanation / Answer

the maxium speed of lanuch is

v = sqrt(2 * g * h)

v = sqrt(2 * 9.8 * (1.2-0.9 )

v = 2.42 m/s

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