Concept explainers
A car traveling at 30.0 mph uniformly accelerates up to 50.0 mph in 20.0 s. What
was its average speed in m/s? [Hint: 1 mph = 0.447 07 m/s.]
The average speed of the car, in
Answer to Problem 22SP
Solution:
Explanation of Solution
Given data:
The initial velocity of the car is
The final velocity of the car is
Time taken,
And,
Formula used:
Write the expression for average speed.
Here,
Explanation:
Recall the expression for average speed.
Substitute
Conclusion:
The average speed of the car is
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