Question 1081336
.
<pre>
1.  A stone id dropped out of a window near the top of a building, what its velocity when it has fallen 4.0 m?

    v = {{{sqrt(2*g*h)}}} = {{{sqrt(2*9.81*4)}}} = {{{sqrt(78.48)}}} = 8.86 m/s (meters per second)


2.  A car starting from rest accelerates at a constant rate of 3.0 m/s2 for 8.0 seconds. How far does the car travel during this time?

    S = {{{(at^2)/2}}} = {{{(3*8^2)/2}}} = 96 m/s = 345.6 km/h.
</pre>