Question

A projectile is fired at time t=0.0 s, from point 0 at the edge of a cliff, with initial velocity components of vox=10 m / s and voy=300 m / s. The projectile rises, then falls into the sea at point P. The time of flight of the projectile is 75.0 s.

In Figure 3.2e, the y-coordinate of the projectile when its x-coordinate is 300 m is closest to:

A) -290 m

B) 290 m

C) +1350 m

D) +4590 m.

E) +2790 m

Answer 1

Solving the problem using the concept of projectile motion and calculating the net vertical displacement.

Answer 2

As shown in the figure, a projectile is fired at time t =0 s, from point O at the upper edge of a cliff, with initial velocity components Vox= 27 m/s and Voy= 230 m/s of and The projectile rises and then falls into the sea at point P. The time of flight of the projectile is 61 s and air resistance is negligible. At this location, g = 9.80 m/s2. What is the horizontal distance (m) of D?