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jklgfds120
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An athlete performs a dive from a handstand off a 10m tower. her center of mass is 0.8m above the tower as she falls into the dive
a) if she can rotate at 5.7rad/s in a tucked position, how many complete somersaults can she do in her dive? assume she must stop rotating 1m above the water to ensure clean entry
b) if she can perform 3 somersualts in a piked position in the same amount of time, what is her angular velocity when performing piked somersautls?
c) the diver is performing a piked dive. she realizes that she won't have enough time to finish her last somersialt and enter the water in a vertical position, so she moves into a tucked position over 0.2s. What is her anguar accel
my question is for a) can i use linear kinematic laws such as v2^2 = v1^2 + 2ad to determine her final velocity 1m from the water, and then use v2 = v1 + at to determine the time it took to go from 10.8m above water to 1m above water? my v2 = -13.87m/s, and my t = 1.41s. does the fact that the diver is rotating make the kinematic laws unusable in this senario?
for b) would i use the equation. w = change in angiular displacement/ t
would change in displacement be 0 since she rotates 3 times and returns to the same position?
thanks a lot =)
a) if she can rotate at 5.7rad/s in a tucked position, how many complete somersaults can she do in her dive? assume she must stop rotating 1m above the water to ensure clean entry
b) if she can perform 3 somersualts in a piked position in the same amount of time, what is her angular velocity when performing piked somersautls?
c) the diver is performing a piked dive. she realizes that she won't have enough time to finish her last somersialt and enter the water in a vertical position, so she moves into a tucked position over 0.2s. What is her anguar accel
my question is for a) can i use linear kinematic laws such as v2^2 = v1^2 + 2ad to determine her final velocity 1m from the water, and then use v2 = v1 + at to determine the time it took to go from 10.8m above water to 1m above water? my v2 = -13.87m/s, and my t = 1.41s. does the fact that the diver is rotating make the kinematic laws unusable in this senario?
for b) would i use the equation. w = change in angiular displacement/ t
would change in displacement be 0 since she rotates 3 times and returns to the same position?
thanks a lot =)
