A projectile is shot horizontally at 23.4 m/s from the roof of a building 55.0 m tall. a. Determine the time necessary for the projectile to reach the ground below.
b. Determine the distance from the base of the building that the projectile lands.
c. Determine the horizontal and vertical components of the velocity just before the projectile
reaches the ground

A 2-kg ball is moving with a constant speed of 5 m/s in a horizontal circle whose radius is 50 cm.
a. What is the acceleration of the ball? [1 mark]
b. What is the magnitude of the net force on the ball?