Question

An egg is dropped from 75 cm, what velocity is egg at when it hits the floor.
What is the maximum height it can be dropped from to withstand impact velocity of 1.7ms-1

I used
V*2 = v*2 + 2ad
V = sqrt 0 + 2 x -9.8 x .75 = -3.83m/s

0.14744 m rounded to 0.15 m

Answer 1

yes,
good to remember v = -sqrt (2 g h)
here
v = -sqrt (2*9.81*.75)
= -3.84 m/s

1.7 = sqrt (2 *9.81 * h)

h = .1472986748

I think g is 9.81, you use 9.8 some classes use 10

Answer 2

Thanks again !