Problema Solution
If a rock falls from a height of 20 meters on the planet jupiter,its height=H (in meters) after (x) seconds.
H(x)=20-13x^2
find the following;
a)what is the height of the rock when x=1 second, x=1.1 seconds and x=1.2 seconds
b)when is the height of a rock 15 meters,10 meters and 5 meters?
c)when does the rock strike the ground?
Answer provided by our tutors
If a rock falls from a height of 20 meters on the planet jupiter,its height=H (in meters) after (x) seconds.
x=1 , H=20-13 =7
b) H =15 , x =sqrt(20-15/13) = sqrt(5/13)
c)H =0 , 13x^2 =20
x^2 =20/13
x= sqrt(20/13)