Concept explainers
a.
To simplify the formula when mass of the ball is 3 kilograms.
a.
Answer to Problem 63PPS
Explanation of Solution
Given:
k is the kinetic energy in Joules
m is the mass of the ball in kilograms.
v is the speed of the ball.
Calculation:
Mass of the ball ( m ) = 3 kilograms, which means m = 3.
Now,
Conclusion:
Hence, the simplified form according to the given situation will be:
b.
To find the kinetic energy of the ball.
b.
Answer to Problem 63PPS
73.5 Joules
Explanation of Solution
Given:
k is the kinetic energy in Joules
v is the speed of the ball
Calculation:
Let,
Given that, the ball moves at the speed of
Now substituting the value of v in equation ( i ),
Conclusion:
Hence, the required kinetic energy of the ball is 73.5 Joules.
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Algebra 1, Homework Practice Workbook (MERRILL ALGEBRA 1)
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