Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 2, Problem 34AP
In Figure 2.11b, the area under the velocity–time graph and between the vertical axis and time t (vertical dashed line) represents the displacement. As shown, this area consists of a rectangle and a triangle. (a) Compute their areas. (b) Explain how the sum of the two areas compares with the expression on the right-hand side of Equation 2.16.
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1d. A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of v0 = 18.5 m/s. The cliff is h = 20.0 m above a flat, horizontal beach as shown in the figure.
Write the equations for the position of the stone with time, using the coordinates in the figure. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not state units in your answer.)
x=
y=
Please answer the following question(s):
1. The speed of a boat in still water is vá. A river flows with a speed of v₁. The boat travels
distance of 19 miles downstream in a river in 1 hour. However, the return journey takes 2
hours. Calculate the vand v₁.
Hint: Velocity=displacement/time. Displacement can be positive of neagtive depending on the
direction. You will first need to set up the equations by taking into account the resultant
velocity of the boat in flowing water. Consider the direction the river is flowing to be positive.
Set up two equations, one for the downstream journey and one for the upstream journey, in
terms of "v" and "v":
Do v" and "v, add or substract downstream to give the resultant downstream velocity?
Do v" and "v, add or substract upstream togive the resultant upstream velocity? Use the
upstream direction as negative. The resultant upstream velocity should be negative.
vb
vb
Downstream
positive
Vr
Upstream
negative
Vr
Caleb left home and traveled toward the city A at an average speed of 57.9 km/h. Some time later, Kim left traveling in the opposite direction with an average speed of 46 km/h. After Caleb has traveled for 1.24 hours they were 117 km apart. Find the number of minutes Kim traveled. Round off only on the final answer expressed in three decimal places.
PLEASE SHOW YOUR COMPLETE AND CORRECT SOLUTION. ASAP! Thank you.
Chapter 2 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 2.1 - Which of the following choices best describes what...Ch. 2.1 - Under which of the following conditions is the...Ch. 2.2 - Are officers in the highway patrol more interested...Ch. 2.5 - Make a velocitytime graph for the car in Figure...Ch. 2.5 - If a car is traveling eastward and slowing down,...Ch. 2.6 - Which one of the following statements is true? (a)...Ch. 2.7 - In Figure 2.12, match each vxt graph on the top...Ch. 2.8 - Consider the following choices: (a) increases, (b)...Ch. 2 - The speed of a nerve impulse in the human body is...Ch. 2 - A particle moves according to the equation x =...
Ch. 2 - The position of a pinewood derby car was observed...Ch. 2 - An athlete leaves one end of a pool of length L at...Ch. 2 - A positiontime graph for a particle moving along...Ch. 2 - A car travels along a straight line at a constant...Ch. 2 - A person takes a trip, driving with a constant...Ch. 2 - A child rolls a marble on a bent track that is 100...Ch. 2 - Figure P2.9 shows a graph of vx versus t for the...Ch. 2 - (a) Use the data in Problem 3 to construct a...Ch. 2 - A particle starts from rest and accelerates as...Ch. 2 - Draw motion diagrams for (a) an object moving to...Ch. 2 - Each of the strobe photographs (a), (b), and (c)...Ch. 2 - An electron in a cathode-ray tube accelerates...Ch. 2 - A parcel of air moving in a straight tube with a...Ch. 2 - In Example 2.7, we investigated a jet landing on...Ch. 2 - An object moving with uniform acceleration has a...Ch. 2 - Solve Example 2.8 by a graphical method. On the...Ch. 2 - A glider of length moves through a stationary...Ch. 2 - Why is the following situation impossible?...Ch. 2 - A glider of length 12.4 cm moves on an air track...Ch. 2 - In the particle under constant acceleration model,...Ch. 2 - At t = 0, one toy car is set rolling on a straight...Ch. 2 - You are observing the poles along the side of the...Ch. 2 - Prob. 25PCh. 2 - An attacker at the base of a castle wall 3.65 m...Ch. 2 - The height of a helicopter above the ground is...Ch. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - At time t = 0, a student throws a set of keys...Ch. 2 - Prob. 31PCh. 2 - A student drives a moped along a straight road as...Ch. 2 - Automotive engineers refer to the time rate of...Ch. 2 - In Figure 2.11b, the area under the velocitytime...Ch. 2 - The froghopper Philaenus spumarius is supposedly...Ch. 2 - A woman is reported to have fallen 144 ft from the...Ch. 2 - At t = 0, one athlete in a race running on a long,...Ch. 2 - Prob. 38APCh. 2 - Hannah tests her new sports car by racing with...Ch. 2 - Two objects, A and B, are connected by hinges to a...Ch. 2 - Prob. 41APCh. 2 - Two thin rods are fastened to the inside of a...Ch. 2 - In a womens 100-m race, accelerating uniformly,...
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- The following problem involves directions in the form of bearing, which we defined in this section. Remember thatbearing is always measured from a north-south line.A boat leaves the harbor entrance and travels 22 miles in the direction N 42◦E. The captain then turns the boat90◦and travels another 19 miles in the direction S 48◦E. At that time, how far is the boat from the harborentrance, and what is the bearing of the boat from the harbor entrance (see the figure below)? (Round youranswers to the nearest whole number.)arrow_forwardI need to answer the question in 30 minutes. Simplify Derivation + Integration.arrow_forwardThe function s(t) = 16t models the distance, s(t), in feet, that an object falls in t seconds. Use this function and the square root property to solve the given problem. Express answers in simplified radical form. Then use a calculator to find a decimal approximation. A sky diver jumps from an airplane and falls 3200 feet before opening a parachute. For how many seconds was the diver in a free fall? The sky diver was in a free fall for seconds. (Simplify your answer. Type an exact answer, using radicals as needed.)arrow_forward
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