(adsbygoogle = window.adsbygoogle || []).push({}); (1) 1. The problem statement, all variables and given/known data

Determine the stopping distance for a car with an initial speed of 95km/h and human reaction time of 1.0s, for an acceleration (a) a = -4.0m/s^2

Initial velocity (V1) = 95 km/h = 26.38 m/s

Final velocity (V2) = 0 m/s

Initial Displacement (Y1) = ?

Final Displacement (Y2) = 0 m

Acceleration = -4.0 m/s^2

2. Relevant equations

V2 = V1 + at (??)

Y2 = Y1 + V1(t) + 1/2(a)(t)^2

3. The attempt at a solution

Tried too many times...

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(2) 1. The problem statement, all variables and given/known data

A helicopter is ascending vertically with a speed of 5.20 m/s. At a height of 125 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground? [ Hint: the package's initial speed equals the helicopter's.]

2. Relevant equations

???

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# A Couple Deceleration Questions..

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