Question

question 6 of 25 you toss an apple across the room to a friend. which of the following statements is true about the apple at the top of its trajectory? a. its acceleration is 9.8 m/s² down. b. its acceleration is zero. c. the vertical component of its velocity is 9.8 m/s down. d. the horizontal component of its velocity is zero.

Explanation:

Step1: Analyze vertical - motion acceleration

In projectile motion near the Earth's surface, the only acceleration acting on the object is the acceleration due to gravity, which is approximately $g = 9.8\ m/s^{2}$ downward throughout the motion. At the top of the trajectory, the vertical - component of the velocity is zero, but the acceleration is still $9.8\ m/s^{2}$ downward.

Step2: Analyze horizontal - motion velocity

The horizontal component of velocity in projectile motion (neglecting air - resistance) remains constant because there is no horizontal force acting on the object. So, the horizontal component of velocity is non - zero.

Answer:

A. Its acceleration is 9.8 m/s² down.