Question

The magnitude of the velocity of a projectile when it is at its maximum height above ground level is 19 m/s. (a) What is the magnitude of the velocity of the projectile 1.7 s before it achieves its maximum height? (b) What is the magnitude of the velocity of the projectile 1.7 s after it achieves its maximum height? If we take x = 0 and y = 0 to be at the point of maximum height and positive x to be in the direction of the velocity there, what are the (c) x coordinate and (d) y coordinate of the projectile 1.7 s before it reaches its maximum height and the (e) x coordinate and (f) y coordinate

Answer 1

the first sentence tells you the projectile's horizontal velocity, which you will assume to be constant in this problem

and that point you also know that its vertical velocity = 0 and that, more generally, acceleration in the vertical direction is -g.

armed with that information, all you need are the equations of motion to solve

https://gyazo.com/002724abd9cb7eb055122e07be79d344

Answer 2

thanks! im going to try it out

Answer 3

@Michele_Laino this one

Answer 4

i hate to ask, but can you also solve it? its worth alot of points on my homework and i hate to waste it

Answer 5

ok!

Answer 6

thank you so much!

Answer 7

here we have a parabolic motion, the situation is like below: