A.) A bullet is fired from ground level with a speed of 120 m/s atan angle 45.0° above the horizontal at a location where g = 10.0m/s2. What is the vertical component of its velocity after 5seconds?
B.) A boy kicks a football with a certain initial velocity at anangle 30° above the horizontal. In 3.0 seconds, the ball reaches at its highest point in its trajectory. What is the initial velocity of the ball?