3. If you dropped your cell phone from a height of 1.20 m above the ground, with what speed would it strike the ground? 4. An astronaut drops a rock on planet X from a height of 0.72 m d. If it takes 0.63 seconds for the rock to strike the ground, what is the acceleration on planet X?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1. You drop a stone down off a bridge. You are able to count to 4.0
seconds when it finally hits the water. How high is the bridge?
2. Niagara Falls is 51 meters high. If you dropped a ball off the ledge,
how much time would it take it to hit the water?
3. If you dropped your cell phone from a height of 1.20 m above the
ground, with what speed would it strike the ground?
4. An astronaut drops a rock on planet X from a height of 0.72 m d. If it
takes 0.63 seconds for the rock to strike the ground, what is the
acceleration on planet X?
5. You drop your cell phone while in the bathroom in front of the mirror
while the water is running in the sink below. If you are 0.45 meters
above the sink, how long do you have before your cell phone is a
gonner.
6. A baseball dropped from the roof of a tall building takes 3.1 seconds
to hit the ground. How tall is the building? [Neglect friction.]
7. A ball thrown vertically upward reaches a maximum height of 30
meters above the surface of Earth. At its maximum height, the speed
of the ball is???
8. A rock falls from rest off a high cliff. How far has the rock fallen when
its speed is 39.2 meters per second?
Transcribed Image Text:1. You drop a stone down off a bridge. You are able to count to 4.0 seconds when it finally hits the water. How high is the bridge? 2. Niagara Falls is 51 meters high. If you dropped a ball off the ledge, how much time would it take it to hit the water? 3. If you dropped your cell phone from a height of 1.20 m above the ground, with what speed would it strike the ground? 4. An astronaut drops a rock on planet X from a height of 0.72 m d. If it takes 0.63 seconds for the rock to strike the ground, what is the acceleration on planet X? 5. You drop your cell phone while in the bathroom in front of the mirror while the water is running in the sink below. If you are 0.45 meters above the sink, how long do you have before your cell phone is a gonner. 6. A baseball dropped from the roof of a tall building takes 3.1 seconds to hit the ground. How tall is the building? [Neglect friction.] 7. A ball thrown vertically upward reaches a maximum height of 30 meters above the surface of Earth. At its maximum height, the speed of the ball is??? 8. A rock falls from rest off a high cliff. How far has the rock fallen when its speed is 39.2 meters per second?
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