A horse accelerates from rest at 3 m/s2. How long does it take to reach a speed of 12 m/s?
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Ответ:
I found an answer key
Explanation:
https://pa01000192.schoolwires.net/cms/lib/PA01000192/Centricity/Domain/135/Physics/PH%20Ch%203/PH%203.2%20Practice%20Problems0001.pdf
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Ответ:
Here, We are given initial velocity 0 and acceleration 3m/s² and final velocity 12m/s, just need to figure out time taken to reach.
Acceleration = Change in rate of velocity/time taken.
A = v - u/t
3 = 12 - 0/t
3t = 12
t = 12/3
t = 4sec.
Hence, Horse take 4sec to achieve the speed of 12m/s.
Ответ:
Electrical energy is caused by moving electric charges called electrons. The faster the charges move, the more electrical energy they carry. As the charges that cause the energy are moving, electrical energy is a form of kinetic energy.
Explanation: