At the end of 7 seconds how far in a horizontal direction will the fragments have scattered?

Question

Rachel's crew is finally sucessful in shooting the firework. they shoot it to its maximum height in 7 seconds and it explodes sending fragments scattering in horizontal directions all around at a speed of 20 meters per second.

(questions)

1. at the end of 7 seconds how far in a horizontal direction will the fragments have scattered?

2. what will be the accerleration of the fragments as they fall vertically?

3 assuming that they all fall from the same maximum height, how long will it take the fragments to hit the ground?

4. what is the path of the fragments as they fall to the ground?

5. why do the fragments follow this path?

Answer 1

1. d = v * t

2. g

3. Neglecting air resistance, the same time to reach h(max).

4. What do you call the graph of x^2 (x squared)?  (that's a hint)

5. B/C it's accelerating vertically, while the horizontal velocity is constant (ignoring air resistance); it's the path of an object in motion in a uniform gravitational field.