In a 30.0-s interval, 450 hailstones strike a glass window of area 0.600 m2 at an angle of 45.0° to the window surface. Each hailstone has a mass of 5.00 g and a speed of 7.80 m/s. Assume the collisions are elastic.
(a) Find the average force on the window.
N
(b) Find the average pressure on the window during this interval.
Pa