Hello,
So the question states that theres a barrel that's 1m in length and the time spent in barrel was not given.
the cannon ball starts from rest and exit with speed of 50m/s. The question asks for Acceleration.
The answer key gave an alternate short cut saying the object go from 0 to 50m/s, and it had an average velocity of 25m/s in barrel. And you can find the time it requires to travel the barrel with that avg velocity which can be used to divide by time to find acceleration.
what I don't get is, how is the average velocity 25m/s if there was no time elapsed in the barrel given?
So the question states that theres a barrel that's 1m in length and the time spent in barrel was not given.
the cannon ball starts from rest and exit with speed of 50m/s. The question asks for Acceleration.
The answer key gave an alternate short cut saying the object go from 0 to 50m/s, and it had an average velocity of 25m/s in barrel. And you can find the time it requires to travel the barrel with that avg velocity which can be used to divide by time to find acceleration.
what I don't get is, how is the average velocity 25m/s if there was no time elapsed in the barrel given?