A 250-Kg Projectile Is Launched at an Angle of 20

Multiple Choice

A 2.50-kg projectile is launched at an angle of 20.0° above the horizontal with an initial speed of 100 m/s from the top of a building 40 m high.If the projectile is traveling 85.0 m/s at its maximum height of 47.0 m,how much work has been done on the projectile by air friction?

A) -3.3E+3 J
B) 1.7E+2 J
C) -3.5E+3 J
D) 2.4E+4 J