Answer:
A counterexample is sufficient, as long as it is well built and complete.
Step-by-step explanation:
A counterexample is a statement used to show that a previously spoken statement is false.
The counterexample must be direct, clear, simple, well constructed and concise to be effective. If the counterexample has all of these characteristics, only one counterexample is sufficient to show that a conditional statement is flawed.
As an example of this, we can use a square as a counterexample of a statement that states that every rectangle has 4 equal sides.
Using the given equation, it is found that it lands on the ground after 0.875 seconds.
<h3>What is the equation for the projectile's height?</h3>
It is given by:
In which:
- v is the initial velocity.
In this problem, considering that the projectile jumps straight into the air with an initial vertical velocity of 14 ft/s, the parameters are v = 14 and h = 0, hence:
It lands on the ground when h(t) = 0, hence:
Then:
It lands on the ground after 0.875 seconds.
More can be learned about equations at brainly.com/question/25537936
This is the concept of trigonometry, the value of x will be calculated as follows;
sin theta=[opposite]/[hypotenuse]
theta=x
opposite=16 units
hypotenuse=21 units
thus;
sin x=16/21
hence;
x=arcsin(16/21)
x=49.63
x=50 (to the nearest degrees)
First: 14
Second:t
Since X=14 plug it in
14-9=5