Question

Which equation would best help solve the following problem?

Brett kicks a field goal with an initial vertical velocity of 42m/s.how long will it take the football to hit the ground?

Answer 1

Answer:the correct answer is D

Step-by-step explanation: I just took the test.

Answer 2

C

Explanation:

You are making a couple of assumptions. The first is that since the given has units of m/s that requires an acceleration based in m/s^2. That eliminates choices A and B. 16 is usually associated with f/s^2

Second, you are assuming 42m/s is positive and the acceleration due to gravity is negative. It doesn't matter as long as they are opposite.

Third, you are assuming that 42 m/s is the vertical acceleration. If it is not then some sort of trigonometry is needed. Since your choices don't offer trig then this assumption must be taken care of.

So the correct answer is C.