26%) Problem 1: A swan on a lake gets airborne by flapping its wings and running

Question

26%) Problem 1: A swan on a lake gets airborne by flapping its wings and running on top of the water. 50% Part (a) If the swan must reach a speed of 4.9 mis to take off and it accelerates from rest at a constant rate of 043 ms2 how far, in meters, will it travel before becoming airborne? Grade Summary Deductions Potential d= 100 Submissions Attempts remaining: I 0% per attempt) detailed view cotanO sin acoso atan0 acotansinhO coshO tanhO cotanho 1 2 3 O Degrees Radians Submit Hint Feedback: deduction per feedback, Hints:-deduction per hint. Hints remaining: 50% Part (b) How long will that take, in seconds?

Explanation / Answer

As we see swan at rest so initial velocity u =0m/s after that swan reach the speed 4.9 m/s. so that final velocity v = 4.9 m/s. acceleration is costant that is a = 0.43 m/s2.

so,

u = 0 m/s

v = 4.9 m/s

a = 0.43 m/s2

t = ?

for constant acceleration equation of motion is ;

v = u + at

4.9 = 0 + 0.43t

t = 4.9/0.43

t = 11.39 sec

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