Answer:
Height after 5 seconds is <em>215 ft</em>
Step-by-step explanation:
Given that:
The initial velocity of object which is projected upwards is 123 ft/sec.
Height of the object, <em>h</em> after time <em>t </em> in seconds, is given as:
Here, <em>t </em>will always be positive, so and will also be positive.
But coefficient of is negative, that means something is subtracted from the positive term .
To find:
Height of object after 5 seconds.
Solution:
Given that seconds.
Let us put the value in the given relation of and :
So, height after 5 seconds is <em>215 ft</em>.