A projectile is fired from the origin (at y = 0s m) a shown in the figure. The initial velocity components are v 0x = 940 m/s and v 0y = 96 m/s. The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q. In Fig. 3.1, the y-component of the acceleration of the shell at point P is closest to
Incomplete.
To determine the y-component of the acceleration of the shell at point P, we need to analyze the motion of the projectile.
Given:
Initial velocity component in the x-direction (v0x) = 940 m/s
Initial velocity component in the y-direction (v0y) = 96 m/s
Since the projectile reaches its maximum height at point P, we know that the vertical component of its velocity becomes zero at this point. The projectile is momentarily at rest before it starts falling down.
At the highest point, the vertical velocity component changes from positive to negative. This signifies that the acceleration due to gravity acts in the opposite direction to the initial vertical velocity.
Therefore, the y-component of acceleration at point P is equal to the acceleration due to gravity (g) which is approximately 9.8 m/s^2, acting downward (negative direction).
The y-component of the acceleration at point P is approximately -9.8 m/s^2.