Afootball player kicks a ball with a mass of 0.42 kg. the average acceleration of the football was 14.8 m/s square. how much force did the kicker supply to the football?

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.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Where do magnetic lines of force enter earth?