Hey! please help i’ll give brainliest! if it lets me:)

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?