A small mailbag is released from a helicopter that is descending steadily at 1.5

Question

A small mailbag is released from a helicopter that is descending steadily at 1.50 m/s. After 2.00 s, (a) what is the speed of the mailbag, and (b) how far is it below the helicopter? (c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 1.50 m/s? A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. (a) What is the acceleration of the ball while it is in flight? (b) What is the velocity of the ball when it reaches its maximum height? Find (c) the initial velocity of the ball and (d) the maximum height it reaches. S A package is dropped from a helicopter that is 5 descending steadily at a speed v_0. After t seconds have elapsed, (a) what is the speed of the package in terms

Explanation / Answer

here,

51)

time of flight , T = 2 s

the time taken to reach maximum height , t = T/2 = 1 s

a)

the accelration of the ball while it is in flight is 9.81 m/s^2 acting downwards

b)

at maximum height the velocity of the ball is zero

c)

the initial velocity of the ball , u = 0 + g * t

u = 9.81 * 1 = 9.81 m/s^2

d)

teh maximum height , hmax = 0.5 * g * t^2

hmax = 4.9 m

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