4. A rock is thrown straight down from a 60 m tall building with a speed of 4.0 m/sec. a) How long will it take for the rock to reach the ground? B) What will be the speed of the rock when it hits the ground? C) If the rock comes to a stop in 0.002 seconds, what is the Impulse that the ground exerts on the rock?
4. A rock is thrown straight down from a 60 m tall building with a speed of 4.0 m/sec. a) How long will it take for the rock to reach the ground? B) What will be the speed of the rock when it hits the ground? C) If the rock comes to a stop in 0.002 seconds, what is the Impulse that the ground exerts on the rock?
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Transcribed Image Text:4. A rock is thrown straight down from a 60 m tall building with a speed of 4.0
m/sec. a) How long will it take for the rock to reach the ground? B) What
will be the speed of the rock when it hits the ground? C) If the rock comes
to a stop in 0.002 seconds, what is the Impulse that the ground exerts on
the rock?
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