Motion problem when acceleration is constant

AI Thread Summary
A coin dropped from rest accelerates at 10 m/s², prompting calculations for its speed and distance fallen over specified time intervals. After 2 seconds, the coin's speed is 20 m/s, and it falls 20 meters; after 5 seconds, its speed is 50 m/s, and it falls 62.5 meters. The time taken to fall 5 meters is approximately 1 second, while it takes about 1.4 seconds to fall 10 meters. The velocities of the coin after falling 5 meters and 10 meters are 10 m/s and 14 m/s, respectively. Additionally, a feather dropped simultaneously accelerates at 3 m/s², resulting in a speed of 15 m/s after the coin has fallen 5 meters.
brsullivan
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Homework Statement


A coin, initially at rest is dropped from an elevated position and freely falls to the ground with an acceleration of 10m/s/s.
a) How fast is the coin traveling after 2 sec b) How fast is the coin traveling after 5 seconds
c) How far does the coin fall after 2 sec d) How far does the coin fall after 5 sec
e) How much time does it take the coin to fall 5m f) How much time does it take the coin to fall 10m g) What is the velocity of the coin after it has fallen 5 m h) What is the velocity of the coin after it has traveled 10m i) A feather is dropped at the same time as the coin and falls with an acceleration of 3.0 m/s/s (due to air resistance). What is the speed of the feather after the coin has fallen 5m


Homework Equations


I don't know


The Attempt at a Solution


I am terrible at physics and have absolutely no idea what to do. I don't even know where to start. I am a high school student in college physiscs...so yeah.
 
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brsullivan said:
1.


Homework Equations


I don't know

.

Go through any physics textbook and find out the relevant equations.
 

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