You need to suppress the spurious "?" marks -- confusing and annoying
v sinθ * 20 - 4.9 * 20^2 = 450
v cosθ * 20 = 3000
solve for v and θ, and then you can get the answers to the questions.
Post your work if you get stuck.
projectile, fired with unknown initial velocity, lands 20 s later on the side of a hill, 3000
m away horizontally and 450 m vertically above its starting point. (a) What is the vertical?
Component of its initial velocity? (b) What is the horizontal component of its initial?
Velocity?
1 answer
1 answer