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?
1 answer:
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Answer:
A. Refer to the figure.
B. The net force acting on the crate is
C. We should first find the acceleration of the crate using the following kinematics equation:
Mass of the crate can be found by Newton’s Second Law:
Answer:
B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.
Explanation:
As we know that the small gear completes 24 revolutions in 20 seconds
so the angular speed of the smaller gear is given as
Now we know that the tangential speed of the chain is given as
so we have
Since both gears are connected by same chain so both have same linear speed and hence correct answer will be
B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.
Answer:
the drag coefficient = 0.2703126
Explanation:
see the attached file
