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- (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.) . In Figure 1.19, arrows show the directions of the velocity and the acceleration of a hall moving in a circle. Make a similar sketch showing these directions for a car (a) speeding up from a stop sign and (h) slowing down as it approaches a stop sign.(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 a car goes around a curve, the driver increases its speed. This means the car has two accelerations. What are the directions of these two accelerations?(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.) 31. We have studied four different laws authored by Sir Isaac Newton. For each of the following, indicate which law is best for the task described. (a) Calculating the net force on a car as it slows down. (b) Calculating the force exerted on a satellite by Earth. (c) Showing the mathematical relationship between mass and weight (d) Explaining the direction that a rubber stopper takes after the suing that was keeping it moving in a circle overhead is cut. (e) Explaining why a gun recoils when it is fired. (f) Explaining why a wing on an airplane is lifted upward as it moves through the air.
- (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?(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 "Vector addition'' and how is it done?(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.) List the physical quantities identified in this chapter. From which of the fundamental physical quantities is each derived? Which of them are vectors, and which are scalars?
- (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.) 10. Discuss the distinction between mass and weight.(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.) . At least two forces are acting on you right now. What are these forces? Describe the relationship between the size and direction of these two forces.(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.) . The graphs in Figure 2.52 show plots of force versus acceleration for several objects. Rank these displays using the identifying numbers according to the mass of the affected object from smallest to largest. If any objects share the same mass, give them the same ranking. For reference, the graphs all have the same scale for their respective F and a axes. Explain your reasons for your rankings.
- (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.) Scenes in films or television programs sometimes show people jumping off moving trains and having unpleasant encounters with the ground. If someone is on a moving flatbed train car and wishes to jump off, how could the person use the concept of relative speed to make a safer dismount?(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.) . How is Newton’s third law of motion involved when you jump straight upward?What is the net force acting on an 1,100kg car that accelerates from 12.0m/s to 23.0m/s in 5.50 seconds
