There is a 250-m-high cliff at Half Dome in Yosemite National Park in California. Suppose a boulder breaks loose from the top of this cliff. (a) How fast will it be going when it strikes the ground? (b) Assuming a reaction time of 0.300 s, how long a time will a tourist at the bottom have to get out of the way after hearing the sound of the rock breaking loose (neglecting the height of the tourist, which would become negligible anyway if hit)? The speed of sound is 335.0 m/s on this day.
There is a 250-m-high cliff at Half Dome in Yosemite National Park in California. Suppose a boulder breaks loose from the top of this cliff. (a) How fast will it be going when it strikes the ground? (b) Assuming a reaction time of 0.300 s, how long a time will a tourist at the bottom have to get out of the way after hearing the sound of the rock breaking loose (neglecting the height of the tourist, which would become negligible anyway if hit)? The speed of sound is 335.0 m/s on this day.
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Transcribed Image Text:There is a 250-m-high cliff at Half Dome in
Yosemite National Park in California. Suppose a
boulder breaks loose from the top of this cliff.
(a) How fast will it be going when it strikes the
ground? (b) Assuming a reaction time of 0.300
s, how long a time will a tourist at the bottom
have to get out of the way after hearing the
sound of the rock breaking loose (neglecting the
height of the tourist, which would become
negligible anyway if hit)? The speed of sound is
335.0 m/s on this day.
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