ing Time: 14 minutes, 04 seconds 2 poists Save Anwer from a tall building Which

Question

ing Time: 14 minutes, 04 seconds 2 poists Save Anwer from a tall building Which one of the fellowing equations could be used to cakculate how much time it would take to reach a following 0 m/s? iations could be used to calculate how uestion 2 A ball is thrown-ands-tht ground reaches a maximum hight of 38 m what was es initial speed. in units of m/s? assume air resistance is negligble take the magnitude of the acceleration due to gravity"88m give your answer to at least 4 signficant figures Question 3 MacBook Pro H T % cmd cmd ×

Explanation / Answer

Question 1)

2nd equation is the correct answer.

because, vf = vi + a*delta_t

==> delta_t = (vf - vi)/a

= vf/a (since vi = 0 )

problem 2)

we know, Hmax = vi^2/(2*g)

==> vi = sqrt(2*g*Hmax)

= sqrt(2*9.8*38)

= 27.3 m/s

problem 3)

use,

d = (vi + vf)*t/2

= (17 + 73)*24.1/2

= 1085 m

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