Problem 2.28- Enhanced - with Feedback Part A When jumping, a tea rapidy extends

Question

Problem 2.28- Enhanced - with Feedback Part A When jumping, a tea rapidy extends its legs, reaching a takeoff speed of 10 m/s over a distance of 0 50 mm What is the lea's acceleration as it extends its legs? Express your answer to two significant figures and include the appropriate units You may want to review ( pages 42-45) " | Value | Units Submit My Answers Gove Up Part B How long does R take the flea to leave the ground ater it begins pushing ot? Express your answer to two significant figures and include the appropriate units ! allie 17s My Answers Gve Up

Explanation / Answer

Here ,

speed , u = 1 m/s

distance , d = 0.50 mm

d = 5 * 10^-4 m

part A) let the acceleration is a

Using third equation of motion

v^2 - u^2 = 2 * a * d

1^2 - 0^2 = 2 * a * 5 *10^-4

a = 1000 m/s^2

the acceleration is 1000 m/s^2

b)
let the time taken is t

time taken = (v - u)/a

time taken = (1)/1000

time taken = 0.001 s

the time taken is 0.001 s

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