A football is kicked with an initial velocity of in a direction that makes a 角与地平线。Find the peak height of the football.
Gravitational acceleration is and air resistance is negligible.
The figure above depicts a cannon on the edge of a high cliff. The cannon fires a cannonball at a angle with the horizon at a speed of If the height of the cannon itself is negligible, what is the maximum height from the ground that the cannonball reaches?
The gravitational acceleration is and and are about and respectively.
A projectile fired from the ground has a maximum range of What is the maximum height attained by it?
Assume that air resistance is negligible and gravitational acceleration is
A man kicks a ball from the ground in a direction that makes a 角与地平线。他打算让球l land on top of a moving truck. If the initial horizontal distance between the truck and the ball, at the instant of the kick, is and the truck moves directly away from the ball with a velocity of in what magnitude of velocity should the ball be kicked in order to make it land on the truck?
The height of the truck and air resistance are both negligible, and the gravitational acceleration is
Two identical marbles and are thrown vertically from the ground with speeds of and respectively, as shown above. Let be the distance traveled by until it returns back to the ground. Let be the distance traveled by until it returns back to the ground. What is