B1. A snowboarder rides over a jump (see the sketch below), where the launch ramp is at an angle of 30° above the horizontal. The take-off point is 2 m above the base of the launch ramp and the horizontal distance between the base of the launch ramp and the top of the landing slope is 8m. The landing slope is at an angle of 45° below the horizontal. 1. How fast should the snowboarder be going at the take-off point in order to clear the jump (i.e. to land at the top of the landing slope)? 2. Assuming that the snowboarder starts from rest and that all of their initial gravita- tional potential energy is converted into kinetic energy, what vertical height above the take-off point should they start from so that their take-off speed is 30 km/hr? 3. If the snowboarder has speed 30 km/hr at the take-off point, what is their maximum height above the base of the launch ramp and how long are they in the air for before they land on the landing slope? Take-off point Launch ramp. 30 2m 8 m 45° Landing slope

B1. A snowboarder rides over a jump (see the sketch below), where the launch ramp is at an angle of 30° above the horizontal. The take-off point is 2 m above the base of the launch ramp and the horizontal distance between the base of the launch ramp and the top of the landing slope is 8m. The landing slope is at an angle of 45° below the horizontal. 1. How fast should the snowboarder be going at the take-off point in order to clear the jump (i.e. to land at the top of the landing slope)? 2. Assuming that the snowboarder starts from rest and that all of their initial gravita- tional potential energy is converted into kinetic energy, what vertical height above the take-off point should they start from so that their take-off speed is 30 km/hr? 3. If the snowboarder has speed 30 km/hr at the take-off point, what is their maximum height above the base of the launch ramp and how long are they in the air for before they land on the landing slope? Take-off point Launch ramp. 30 2m 8 m 45° Landing slope

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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