Concept explainers
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.)
33. Six identical cars are towing identical trailers at constant, albeit different, speeds along level roads io the desert. The trailers carry different loads, so their masses vary. The circumstances of each vehicle are shown here. Using the letter identifiers, rank the difference between the magnitude of the force exerted by the car on the trailer and the magnitude of the force exerted by the trailer on the car for each situation from greatest to least. If any situations have the same difference, give them the same ranking. Explain your reasoning in forming your rankings.
(a) Trailer load = 1000 kg; vehicle speed = 20 m/s
(b) Trailer load = 2000 kg; vehicle speed = 20 m/s
(c) Trailer load = 4000 kg; vehicle speed = 40 m/s
(d) Trailer load = 4000 kg; vehicle speed = 10 m/s
(e) Trailer load = 2000 kg; vehicle speed =10 m/s
(f) Trailer load = 1000 kg; vehicle speed =10 m/s
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Chapter 2 Solutions
Inquiry into Physics
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) 16. How does the velocity of a freely falling body change with time? How does the distance it has fallen change? How about the acceleration?arrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . If a ball is thrown straight up into the air, what is its acceleration as it moves upward? What is its acceleration when it reaches its highest point and is stopped at an instant?arrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . What is centripetal acceleration? What is the direction of the centripetal acceleration of a car going around a curve?arrow_forward
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) A single-engine airplane usually has its propeller in the front. Ocean freighters usually have their propeller(s) in the rear. From the perspective of Newtons second law of motion, is this significant?arrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A mass m is attached to a spring with spring constant k, as shown in Figure 2.53. The mass is pulled to the right a distance of 0.2 m and released. Rank the following spring-mass combinations according to their oscillation periods from shortest to longest. If any combinations have the same period, give them the same rank. You should assume that there is no friction between the mass and the horizontal surface. (a) k = 0.5 N/m: m 0.25 kg (b) k = 0.5 N/m: m 0.50 kg (c) k = 0.5 N/m; m 1.00 kg (d) k = 1.0 N/m: m 0.25 kg (e) k = 1.0 N/m: m 0.50 kgarrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) As any car travels with constant velocity on a straight, flat section of highway the road still exerts both a vertical (upward or downward) force and a horizontal (forward or backward) force on the car. Identify the specific direction of each of these forces.arrow_forward
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . What is the relationship between velocity and acceleration?arrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Truck drivers approaching a steep hill that they must climb often increase their speed. What good does this do, if any?arrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Two astronauts in an orbiting space station "play catch" (throw a ball back and forth to each other). Compared to playing catch on Earth, what effect, if any, does the "weightless" environment have on the process of accelerating (throwing and catching) the ball?arrow_forward
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