Megan was doing time trials on her bike around a 400m horizontal track. She took 32 seconds to travel 400m. What was her average
2 answers:
Answer:
The answer is Average speed is equal to 12.5 m/sec
Explanation:
1- The average speed is the relationship between the distance traveled that a body made and the total time it took to perform it.
2- The formula that allows to calculate the average velocity is V = ΔX/ΔT where (V) is the average speed, (ΔX) is the distance traveled and (ΔT) is the time interval.
3- Knowing this we can replace the values given in the problem:
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Answer:
Explanation:
Given
W amount of work is done on the system such that it acquires v velocity after operation(initial velocity)
According to work energy theorem work done by all the forces is equal to change in kinetic energy of object
where m=mass of object
v=velocity of object
When the object is already have velocity v then the final speed is given by work energy theorem
From 1 and 2 we get