do you think companies should be required to disclose ingredients in their chemicals if there are environmental concerns? Explai
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Answer:
Part (a)
Part (b) 1.16 s
Part (c) 21.3 ft
Explanation:
Part (a) There are two motions involved: a horizontal motion and a vertical motion. The vertical motion is under gravity and is irrespective of the speed of the diver because the speed is horizontal. Also, the horizontal motion is not accelerated. Therefore, both motions take the same time which is determined by the vertical motion.
With respect to the vertical motion, there is no initial speed because the speed was fully horizontal. In fact, the diver could as well have dropped at the edge of the board and he would spend the same time to get to the pool surface.
Initial speed, u = 0 ft/s
Acceleration, a = g (it is purely under gravity)
Distance, s, = h
Time,
Applying one of the equations of motion which has the required parameters,
Part (b) Substituting the values, taking g = 32.2 ft/s
s
Part (c) Total horizontal distance = horizontal distance due to diving + overhang (L = 6)
Horizontal distance due to diving is dependent solely on the horizontal component of the motion. This component has no acceleration, that is, has uniform speed of 13.2 ft/s.
This distance = speed time
= 13.2 1.16 = 15.3 ft
Total horizontal distance = 15.3 + 6 = 21.3 ft