7. A ball is kicked such that its initial velocity makes an angle of 45 degrees with the horizontal, If the ball Lands 300 meters away, what was its Initial speed? Assume that the ball begins and ends at the same elevation and that there is no air resistance. Initial Speed " 50.0m 10 0m A student has a mass of 50kg. The student places a scale In an elevator, steps on the scale, and then begins Mraveling to another floor, At some point during the trip, the scale reads 450N. Find the student's secateration at that point (when the scale reads 450N). Be sure to provide both magnitude and direction. Acceleration Magnitude: Acceleration Direction