A projectile follows the trajectory shown (no air resistance). Which statement about point <strong>B</strong> (the peak) is correct?
- A
Acceleration is zero at B.
- B
The horizontal velocity is zero; the vertical velocity is not.
- C
Both the horizontal and vertical velocities are zero.
- Dcheck_circle
The vertical velocity is zero; the horizontal velocity equals the launch value.
Explanation
Horizontal velocity is constant throughout (no horizontal force), so at the apex it still equals the launch horizontal component. Vertical velocity passes through zero at the peak. Gravity still acts, so acceleration is not zero.