Student Workbook for Physics for Scientists and Engineers: A Strategic Approach, Vol 1. (Chs 1-21)
4th Edition
ISBN: 9780134110646
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Chapter 2, Problem 73EAP
Your goal in laboratory is to launch a ball of mass m straight up so that it reaches exactly height h above the top of the launching tube. You and your lab partners will earn fewer points if the ball goes too high or too low. The launch tube uses compressed air to accelerate the ball over a distance d, and you have a table of data telling you how to set the air compressor to achieve a desired acceleration. Find an expression for the acceleration that will earn you maximum points.
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Consider the following descriptions of the vertical motion of an object subject only to the acceleration due to gravity. Begin with the acceleration equation a(t) = v'(t) = g, where g= - 9.8 m/s.
a. Find the velocity of the object for all relevant times.
b. Find the position of the object for all relevant times.
c. Find the time when the object reaches its highest point. What is the height?
d. Find the time when the object strikes the ground.
A softball is popped up vertically (from the ground) with a velocity of 25 m/s.
а. v(t)
b. s(t) =
%3D
c. The object's highest point is
m at time t=
S.
(Simplify your answers. Round to two decimal places as needed.)
d. t=
(Simplify your answer. Round to two decimal places as needed.)
A golf ball is thrown straight up from the edge of the roof of a building. A second golf ball is dropped from the roof a time of 1.18 s later. You may ignore air resistance.
Part A
If the height of the building is 20.7 m , what must the initial speed be of the first ball if both are to hit the ground at the same time?
v= m/s
Part B
Consider the same situation, but now let the initial speed v0 of the first ball be given and treat the height h of the building as an unknown. What must the height of the building be for both balls to reach the ground at the same time for v0 = 9.00 m/s .
h= m
A small block has constant acceleration as it slides down a frictionless incline. The block is released from rest at the top of the incline, and its speed after it has traveled 6.00 mm to the bottom of the incline is 3.80 m/sm/s.
A).
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Express your answer with the appropriate units.
Chapter 2 Solutions
Student Workbook for Physics for Scientists and Engineers: A Strategic Approach, Vol 1. (Chs 1-21)
Ch. 2 - For Questions 1 through 3, interpret the position...Ch. 2 - For Questions 1 through 3, interpret the position...Ch. 2 - For Questions 1 through 3, interpret the position...Ch. 2 - FIGURE Q2.4 shows a position-versus-time graph for...Ch. 2 - FIGURE Q2.5 shows a position-versus-time graph for...Ch. 2 - FIGURE Q2.6 shows the position-versus-time graph...Ch. 2 - FIGURE Q2.7 shows the position-versus-time graph...Ch. 2 - FIGURE Q2.8 shows six frames from the motion...Ch. 2 - You’re driving along the highway at a steady speed...Ch. 2 - A bicycle is traveling east. Can its acceleration...
Ch. 2 - (a) Give an example of a vertical motion with a...Ch. 2 - A ball is thrown straight up into the air. At each...Ch. 2 - A rock is thrown (not dropped) straight do from a...Ch. 2 - FIGURE Q2.14 shows the velocity-versus-time graph...Ch. 2 - Alan leaves Los Angeles at 8:00 A.M. to drive to...Ch. 2 - Julie drives 100 mi to Grandmother’s house. On the...Ch. 2 - Larry leaves home at 9:05 and runs at constant...Ch. 2 - FIGURE EX2.4 is the position-versus-time graph of...Ch. 2 - FIGURE EX2.5 shows the position graph of a...Ch. 2 - A particle starts from x0=10matt=0s and moves with...Ch. 2 - FIGURE EX2.7 is a somewhat idealized graph of the...Ch. 2 - FIGURE EX2.8 shows the velocity graph for a...Ch. 2 - FIGURE EX2.9 shows the velocity graph of a...Ch. 2 - FIGURE EX2.7 showed the velocity graph of blood in...Ch. 2 - Prob. 11EAPCh. 2 - FIGURE EX2.1 2 shows the velocity-versus-time...Ch. 2 - a. What constant acceleration, in SI units, must a...Ch. 2 - A jet plane is cruising at 300 m/s when suddenly...Ch. 2 - a. How many days will it take a spaceship to...Ch. 2 - Prob. 16EAPCh. 2 - A speed skater moving to the left across...Ch. 2 - A Porsche challenges a Honda to a 400 m race....Ch. 2 - Acar starts from rest at a stop sign. It...Ch. 2 - Prob. 20EAPCh. 2 - A student standing on the ground throws a ball...Ch. 2 - A rock is tossed straight up from ground level...Ch. 2 - 23. When jumping, a flea accelerates at an...Ch. 2 - Prob. 24EAPCh. 2 - A rock is dropped from the top of a tall building....Ch. 2 - A skier is gliding along at 3.0 m/s on horizontal,...Ch. 2 - A car traveling at 30 m/s runs out of gas while...Ch. 2 - Prob. 28EAPCh. 2 - A snowboarder glides down a 50-m-long, 15° hill....Ch. 2 - A small child gives a plastic frog a big push at...Ch. 2 - FIGURE EX2.31 shows the acceleration-versus-time...Ch. 2 - Prob. 32EAPCh. 2 - A particle moving along the x-axis has its...Ch. 2 - A particle moving along the x-axis has its...Ch. 2 - The position of a particle is given by the...Ch. 2 - The position of a particle is given by the...Ch. 2 - Particles A. B. and C move along the x-axis....Ch. 2 - A block is suspended from a spring, pulled down,...Ch. 2 - A particle’s velocity is described by the function...Ch. 2 - Prob. 40EAPCh. 2 - Prob. 41EAPCh. 2 - A particles velocity is given by the function vx=...Ch. 2 - A ball rolls along the smooth track shown in...Ch. 2 - Draw position, velocity, and acceleration graphs...Ch. 2 - FIGURE P2.45 shows a set of kinematic graphs for a...Ch. 2 - FIGURE P2.46 shows a set of kinematic graphs for a...Ch. 2 - The takeoff speed for an Airbus A320 jetliner is...Ch. 2 - You are driving to the grocery store at 20 m/s....Ch. 2 - You’re driving down the highway late one night at...Ch. 2 - Two cars are driving at the same constant speed on...Ch. 2 - You are playing miniature golf at the golf course...Ch. 2 - The minimum stopping distance for a car traveling...Ch. 2 - A cheetah spots a Thomson’s gazelle, its preferred...Ch. 2 - You are at a train station, standing next to the...Ch. 2 - A 200 kg weather rocket is loaded with 100 kg of...Ch. 2 - A 1000 kg weather rocket is launched straight up....Ch. 2 - A lead ball is dropped into a lake from a diving...Ch. 2 - A hotel elevator ascends 200 m with a maximum...Ch. 2 - A basketball player can jump to a height of 55 cm....Ch. 2 - You are 9.0 m from the door of your bus, behind...Ch. 2 - Ann and Carol are driving their cars along the...Ch. 2 - Amir starts riding his bike up a 200-m-long slope...Ch. 2 - A very slippery block of ice slides down a smooth...Ch. 2 - Bob is driving the getaway car after the big bank...Ch. 2 - One game at the amusement park has you push a puck...Ch. 2 - A motorist is driving at 20 m/s when she sees that...Ch. 2 - Nicole throws a ball straight up. Chad watches the...Ch. 2 - David is driving a steady 30 m/s when he passes...Ch. 2 - A cat is sleeping on the floor in the middle of a...Ch. 2 - Water drops fall from the edge of a roof at a...Ch. 2 - I was driving along at 20 m/s, trying to change a...Ch. 2 - As an astronaut visiting Planet X, you’re assigned...Ch. 2 - Your goal in laboratory is to launch a ball of...Ch. 2 - When a 1984 Alfa Romeo Spider sports car...Ch. 2 - The two masses in FIGURE P2.75 slide on...Ch. 2 - In Problems 76 through 79, you are given the...Ch. 2 - In Problems 76 through 79, you are given the...Ch. 2 - In Problems 76 through 79, you are given the...Ch. 2 - In Problems 76 through 79, you are given the...Ch. 2 - A rocket is launched straight up with constant...Ch. 2 - Careful measurements have been made of Olympic...Ch. 2 - III Careful measurements have been made of Olympic...Ch. 2 - A sprinter can accelerate with constant...Ch. 2 - A rubber ball is shot straight up from the ground...Ch. 2 - The Starship Enterprise returns from warp drive to...
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