College Physics
12th Edition
ISBN: 9781259587719
Author: Hecht, Eugene
Publisher: Mcgraw Hill Education,
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Textbook Question
Chapter 2, Problem 22SP
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.]
Expert Solution & Answer
To determine
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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Chapter 2 Solutions
College Physics
Ch. 2 - 2.22 [I] A car traveling at 30.0 mph uniformly...Ch. 2 - 2.23 [I] People working for National Geographic...Ch. 2 - 2.24 [I] With the previous problem in mind,...Ch. 2 - 2.25 [I] If a vehicle accelerates at 10.0 m/s2...Ch. 2 - 2.26 [I] A drone on a runway accelerates from...Ch. 2 - 2.27 [I] For the object whose motion is plotted...Ch. 2 - 2.28 [I] A body with initial velocity 8.0 m/s...Ch. 2 - 2.29 [I] A truck starts from rest and moves with...Ch. 2 - 2.30 [I] A box slides down an incline with...Ch. 2 - 2.31 [I] A car is accelerating uniformly as it...
Ch. 2 - 2.32 [I] An auto’s velocity increases uniformly...Ch. 2 - 2.33 [I] A plane starts from rest and accelerates...Ch. 2 - 2.34 [I] A train running along a straight track...Ch. 2 - 2.35 [II] An object moving at 13 m/s slows...Ch. 2 - 2.36 [I] A body falls freely from rest. Find (a)...Ch. 2 - 2.37 [I] A marble dropped from a bridge strikes...Ch. 2 - 2.38 [II] A stone is thrown straight downward with...Ch. 2 - 2.39 [II] A baseball is thrown straight upward...Ch. 2 - 2.40 [II] A bottle dropped from a balloon reaches...Ch. 2 - 2.41 [II] Two balls are dropped to the ground from...Ch. 2 - 2.42 [II] A nut comes loose from a bolt on the...Ch. 2 - 2.43 [I] A marble, rolling with speed 20 cm/s,...Ch. 2 - 2.44 [II] A body projected upward from the level...Ch. 2 - 2.45 [III] A body is projected downward at an...Ch. 2 - 2.46 [II] A hose lying on the ground shoots a...Ch. 2 - 2.47 [II] A World Series batter hits a home run...Ch. 2 - 2.48 [II] Prove that a gun will shoot three times...Ch. 2 - 2.49 [III] A ball is thrown upward at an angle of ...Ch. 2 - 2.50 [III] A ball is thrown straight upward with...
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