Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN: 9780078807213

Author: Paul W. Zitzewitz

Publisher: Glencoe/McGraw-Hill

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A Boeing 747 "Jumbo Jet" has a length of 63.2 m. The runway on which the plane lands intersects another runway. The width of the intersection is 24.7 m. The plane decelerates through the intersection at a rate of 5.90 m/s2 and clears it with a final speed of 45.3 m/s. How much time is needed for the plane to clear the intersection?

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A blue car of length 4.52 m is moving north on a roadway (hat intersects another perpendicular roadway (Fig. P2.81, page 58). The width of the intersection from near edge to far edge is 28.0 m. The blue car has a constant acceleration of magnitude 2.10 m/s2 directed south. The time interval required for the nose of the blue car to move from the near (south) edge of the intersection to the north edge of the intersection is 3.10 s. (a) How far is the nose of the blue car from the south edge of the intersection when it stops? (b) For what time interval is any part of the blue car within the boundaries of the intersection? (c) A red car is at rest on the perpendicular intersecting roadway. As the nose of the blue car enters the intersection, the red car starts from rest and accelerates east at 5.60 m/s2. What is the minimum distance from the near (west) edge of the intersection at which the nose of the red car can begin its motion if it is to enter the intersection alter the blue car has entirely left the intersection? (d) II the red car begins its motion at the position given by the answer to pan (c), with what speed does it enter the intersection?

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A truck tractor pulls two trailers, one behind the other, at a constant speed of 1.00 102 km/h. It takes 0.600 s for the big rig to completely pass onto a bridge 4.00 102 m long. For what duration of time is all or part of the truck-trailer combination on the bridge?

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A suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other, taking 2.50 s.Then security agents appear, and the man runs as fast as he can back along the sidewalk to his starting point, taking 10.0 s.What is the ratio of the man’s running speed to the sidewalk’s speed?

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Two trains A and B of length 400 m each are moving on two parallel tracks with a uniform speed of 72 Km/h in the same direction, with A ahead of B. The driver of B decides to overtake A and accelerates by 1 m/s. If after 50 s, the guard of B just brushes past the driver of A, what is the original distance between them?
1250 m
150 m
50 m
125 m

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A body moving in the positive x-direction passes the origin at time t = 0. Between t = 0 and t = 1 second, the body has a constant speed of 14 (m/s). At t = 1 second, the body is given a constant acceleration of 5 (m/s2) in the negative x-direction. The position x of the body in meters at t = 9 seconds is

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A man walks on a straight road from his home to a market 5 km away with a speed of 10 km/h. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/h. What is the magnitude of average velocity?

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On a one lane road, a person driving a car at v1 = 58 mi/h suddenly notices a truck 1.1 mi in front of him. That truck is moving in the same direction at v2 = 35 mi/h. In order to avoid a collision, the person has to reduce the speed of his car to v2 during time interval Δt. The smallest magnitude of acceleration required for the car to avoid a collision is a. During this problem, assume the direction of motion of the car is the positive direction.
1. Use the expressions you entered in parts (c) and (f) and enter an expression for a in terms of d, v1, and v2.
a = ( v2 - v1 )/Δt
Δt = ( 2 ) ( d )/( v1 - v2 )
2. Calculate the value of a in meters per second squared.

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The catapult of the aircraft carrier USS Abraham Lincoln accelerates an F/A-18 Hornet jet fighter from rest to takeoff speed of 173 mi/h in a distance of 307 ft. How much time does it take for the fighter to accelerate to takeoff speed?

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An unidentified flying object (UFO) is observed to travel a total distance of 19000 m, starting and ending at rest, over a duration of 4.23 s. Assuming the UFO accelerated at a constant rate to the midpoint of its journey and then decelerated at a constant rate the rest of the way, what was the magnitude of its acceleration? Express your answer in g s , where 1 g = 9.81 m/s^2.

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3.2 A rhinoceros is at the origin of coordinates at time t1=0t1=0. For the time interval from t1t1t_1 to t2t2t_2 = 13.0 ss , the rhino's average velocity has x-component -3.8 m/sm/s and y-component 5.2 m/sm/s .1. At time t2=t2= 13.0 ss what is the x-coordinate of the rhino?
2. At time t2=t2= 13.0 ss what is the y-coordinate of the rhino?
3. How far is the rhino from the origin?

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A car drives around a circular track of diameter 156 m at a constant speed of 33.0 m/s. During the time it takes the car to travel 102 degrees around, what is the magnitude of the car s average acceleration?
13.96 m/s^2
6.98 m/s^2
12.19 m/s^2
0 m/s^2
CANNOT USE CENTRIPITAL MOTION EQUATION, must calculate average acceleration

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On the earth, an astronaut throws a ball straight upward; it stays in the air for a total time of 3.0 s before reaching the ground again. If a ball were to be thrown upward with the same initial speed on the moon, how much time would pass before it hit the ground?A. 7.3 s B. 18 s C. 44 s D. 108 s

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