In a 46 s interval, 450 hailstones strike a glass window of area 1.187 m² at an angle 23° to the window surface. Each hailstone has a mass of 2 g and speed of 6.1 m/s.
a. If the collisions are elastic, find the average force on the window. (Answer in units of N.)
b. Find the pressure on the window. (Answer in units of N/m²)
