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(a)
The velocity of the car after each second.
(a)
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Answer to Problem 18E
The velocities after 1s, 2s, 3s, 4s and 5s are
Explanation of Solution
Given info: The car accelerates at
Write the formula for average acceleration.
Here,
a is the average acceleration
t is the time
Re-arrange the equation to get
For
Substitute 0 m/s for
For
Substitute 0 m/s for
For
Substitute 0 m/s for
For
Substitute 0 m/s for
For
Substitute 0 m/s for
The velocity time graph is given below.
Figure (1)
Conclusion:
Therefore, the velocities after 1s, 2s, 3s, 4s and 5s are
(b)
The distance travelled after each second.
(b)
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Answer to Problem 18E
The distances after 1s, 2s, 3s, 4s and 5s are
Explanation of Solution
Given info: Acceleration is
Write the formula to calculate the distance.
Here,
d is the distance
For
Substitute 0 m/s for
For
Substitute 0 m/s for
For
Substitute 0 m/s for
For
Substitute 0 m/s for
For
Substitute 0 m/s for
The distance time graph is,
Figure(2)
Conclusion:
Therefore, the distances after 1s, 2s, 3s, 4s and 5s are
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EBK PHYSICS OF EVERYDAY PHENOMENA
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