In major league baseball, the pitcher's mound is 60 feet from the batter.
if a pitcher throws a 91 mph fastball, how much time elapses from when the ball leaves the pitcher's hand until the ball reaches the batter?

Converting the speed from miles per hour to feet per second:
91 mph = 133.5 feet / second

Time = distance / speed
Time = 60 / 133.5
Time = 0.45 seconds

The ramp has dimensions of 20 m length and 4 m height. the angle made by the ramp on the horizontal ground is
θ = sin⁻¹ (4/20)
after getting the angle, the force required to move the box can then be solved given that the mass of the box is known and also the coefficient of friction of the ramp