Physics, 13.02.2020 07:43 didraga777
A skateboarder traveling at 4.45 m/s can be stopped by a strong force in 1.82 s and by a weak force in 5.34 s. The mass of the skateboarder and the skateboard is 53.6 kg. What is the impulse on the skateboarder? What is the average force on the skateboarder in each of these stops? Analyze and Sketch the Problem
List Knowns and Unknowns
Knowns Unknowns
m = ∆tstrong force = F∆t =
∆vi = ∆tweak force = Fstrong force =
∆vf = Fweak force =
SOLVE FOR THE UNKNOWNS
a. Determine the initial and final momentum
b. Apply the impulse-momentum theorem to determine the impulse.
c. Use the impulse to determine the force needed to stop the skateboarder
EVALUATE THE ANSWER
Explain why the magnitude of the force is realistic considering the times
Answers: 1
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