a student raises a 4kg ball to an unknown height on a building. It is calculated that the ball has a speed of 30m/s when it hits
the ground. Calculate the height it fell from using the law of conversion of energy and the potential and kinetic energy questions
1 answer:
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Answer:
Time = 80.91 seconds
Explanation:
Given the following data;
Velocity = 5.50 m/s.
Distance = 445 meters
To find the time;
Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.
Mathematically, velocity is given by the equation;
Substituting into the formula, we have;
5.5 = 445/time
Time = 445/5.5
Time = 80.91 seconds