MasteringPhysics: HW3: Two-dimensional motion Secure https://session.masteringph

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MasteringPhysics: HW3: Two-dimensional motion Secure https://session.masteringphysics.com/myct/itemView?offset next&assignmentProblemlD; 90150511 HW3: Two-dimensional motion Multiple Choice Question 3.6 ) 150121 . Part A 30° 20m A projectile is fired from the origin (aty- 0 m) as shown in the figure. The initial velocity components are Vaz-230 m/s and Voy- 23 m/s. The projectle reaches maximum height at point P, then it falls and strikes the ground at point Q. In the figure, the y-component of the acceleration of the shell at point P is closest to: 5 m/s2 +5 m/s2 +10 m/s 10 mis2 zero Submit Request Answer Provide Feedback Next>

Explanation / Answer

At point P even vertical component of velocity is equal to zero but it experience gravitational force towards vertically downward direction.so it has acceleration in the down ward direction but it protected in the upward direction. So acceleration a=-g.

Therefore a = -10 m/sec2.

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