A ball, with a mass of 0.144 kg, is thrown from the top of a 76.8 m building (point A) at an angle, θ = 65º with respect to the horizontal. The initial speed of the ball is unknown. The ball reaches a maximum height of 12 m above the building after which it hits the ground at point B. The difference between the kinetic energy of the ball at point A and point B, is equal to:

Question

A ball, with a mass of 0.144 kg, is thrown from the top of a 76.8 m building (point A) at an angle, θ = 65º with respect to the horizontal. The initial speed of the ball is unknown. The ball reaches a maximum height of 12 m above the building after which it hits the ground at point B. The difference between the kinetic energy of the ball at point A and point B, is equal to:
Assume the value of the gravitational acceleration as g = 9,81 ms-2.
Use the point in stead of the comma as decimal symbol in your answer!
Enter only numeric digits and a point and not the units!
Round the value to THREE significant digits!

Answer