Q1) The skateboard rider leaves the ramp at A with an initial velocity v,at a 30° angle. If he strikes the ground at B, determine v, and the time offlight, (Ans, v,=6.49 m/s t-0.89 sec)Q2) If the motorcycle leaves the ramp traveling at 110 ft/s, determine theheight h ramp B must have so that the motoreyele lands safely(Ans. h=14.7 ft)110 s,3 ft350 ftQ3) It is observed that the time for the ball to strike the ground at B is2.5 s. Determine the speed v, and angle 0, at which the ball was thrown.(Ans. v, =23.2 m/s, 0,= 30.5)12 m50 mQ4) The ball i s thrown off the top of the building. If it strikes the groundat B in 3 s, determine the initial velocity v, and the inclination angle 0, atwhich it was thrown. Also, find the magnitude of the ball's velocity whenit strikes the ground, (Ans. 0,-49.4, v=30.7 ft/s, v,- 76 ft/s, 0,=57.6)75 ft60 ft

Answered: Q1) The skateboard rider leaves the…

Q1) The skateboard rider leaves the ramp at A with an initial velocity v, at a 30° angle. If he strikes the ground at B, determine v, and the time of flight (Ans, v6.49 m/s t-0.89 sec)

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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Concept explainers

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

Q1) The skateboard rider leaves the ramp at A with an initial velocity v,
at a 30° angle. If he strikes the ground at B, determine v, and the time of
flight, (Ans, v,=6.49 m/s t-0.89 sec)
Q2) If the motorcycle leaves the ramp traveling at 110 ft/s, determine the
height h ramp B must have so that the motoreyele lands safely
(Ans. h=14.7 ft)
110 s,
3 ft
350 ft
Q3) It is observed that the time for the ball to strike the ground at B is
2.5 s. Determine the speed v, and angle 0, at which the ball was thrown.
(Ans. v, =23.2 m/s, 0,= 30.5)
12 m
50 m
Q4) The ball i s thrown off the top of the building. If it strikes the ground
at B in 3 s, determine the initial velocity v, and the inclination angle 0, at
which it was thrown. Also, find the magnitude of the ball's velocity when
it strikes the ground, (Ans. 0,-49.4, v=30.7 ft/s, v,- 76 ft/s, 0,=57.6)
75 ft
60 ft

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