Question

The position, d, in metres of an object

in motion as it travels is given by:
d= (t + 2) (t + 1.2)
It is the time in seconds.
This is an equation of motion.
By looking at it, we can learn about
how the object started moving.
First, expand the brackets.
t2+2.4+3.2t
The initial height is the constant
(no t) term.
What is the initial height?

Answer 1

2.4m

Explanation:

The question has already done most of the work for you. To find the initial height, simply set t = 0 and substitute it into the function.

`d(0) = {0}^(2) + 2.4 + 3.2(0) \\ = 2.4m`