What is the acceleration of a rock at the top of its trajectory when thrown straight upward. explain whether or not the answer is zero by using the equation a = f/m as a guide to your thinking?

Acceleration directed downward

Explanation:

From Newton's second law we know that

so

The force acting on the abject is the gravitational pull of the earth. Which is also called the weight of the object

We know that

So

true is the correct answer

hope i

conduction, convection, radiation