1) physics questions.?

Question

hazel dropped a stone for her bedroom window.

a) WHAT IS ITS VELOCITY AFTER ONE SEC.

b) HOW FAR FROM THE WINDOW HAS IT FALLEN AFTER ONE SEC.

c) HOW FAR DOES THE STONE FALL DURING THE SECOND

Answer 1

Let:

v be the velocity at time t,

g be the acceleration due to gravity.

(a)

v = gt

= 9.81 * 1

= 9.81m.

(b)

s = gt^2 / 2

= 9.81 * 1^2 / 2

= 4.91 m.

(c)

If you meant during the first second, 4.91m.

If you meant during the second second, putting t = 2 sec. and subtracting the 4.91m. for the 1st second:

s = 9.81 * 2^2 / 2 - 4.91

= 14.7 m.

Answer 2

a)8m/s

b)8m

c)this question is the same as question b)