Civil and Environmental Engineering Answers

A ball is released from a window that is 10 meters above the ground. When the ball leaves your hand, it is moving 8m/s at an angle 300 below the horizontal. Ignoring the effect of air resistance, how far horizontally from the window will the ball hit the ground?

In a court with a ceiling height of 30ft, a player throws a ball towards a wall that is 80ft away. If the ball was released from height of 5ft from the floor and has initial velocity of 55 ft/s, what is the highest point at which the ball could hit the wall?

A baseball player hits a ball such that as it leaves the bat, it has speed of 40 meters per second and has an angle of 440. What is the time that the ball reaches the highest point of its flight?

A car is driving at speed of 80 mph in a circular track with a radius of 1500 ft. The driver applied brake to decelerate the car and after 6 seconds, the speed decreases to half the original speed. What is the acceleration of the car at the instant after the brakes have been applied? At ft/s2

A car has an increasing speed at rate of 1.5m/s2 as it rounds a curve. What is the radius of curvature at a point when the speed of the car is 60kph and the magnitude of the total acceleration is 4m/s2?

A car is driving at a speed of 80mph in a circular track with radius of 1500ft. The driver applied brakes to decelerate the car and after 6 seconds, the speed decreases to half the original speed. What is the acceleration of the car at the instant after the brakes have been applied?

What is the horizontal range of a projectile if the object is fired from a building 400m high and has initial velocity of 350m/s? The angle of elevation of the projectile is 250.

A gun has fired at a moving target. The bullet has a muzzle velocity of 1200 ft/s. The gun and the target are both on level ground, with target moving 60 mph away from the gun have a distance of 30,000 ft from the gun the moment the bullet was fired. What is the angle of the projectile needed to hit the target?