COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 3, Problem 65QAP
To determine
How far east and how far south does Nathan walks?
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79. •Sports Gabriele Reinsch threw a discus 76.80 m on
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3. • As you walk to class with a constant speed of 1.75 m/s, youare moving in a direction that is 18.0° north of east. How muchtime does it take to change your displacement by (a) 20.0 or (b) 30.0 m north?
58. . A motorcyclist drives at 22 m/s in a direction 35° east of north relative to
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relative to Earth, measured counterclockwise from due east? Example 3-11
Chapter 3 Solutions
COLLEGE PHYSICS
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- • 2. A projectile is fired with a horizontal velocity of 330 m/s from the top of a cliff 80 m high. a) how long will it take to strike the level ground at the base of the cliff? b) how far from the foot of the cliff will it strike? c) With what velocity will it strike?arrow_forwardA = 2.00k + 6.00ý and 37. •Given the vectors B = 3.00â – 2.00ý and the vector Ď = Ã – B, calculate the magnitude and angle with the +x axis of the vector D. SSMarrow_forward46. •An object undergoing parabolic motion travels 100 m in the horizontal direction before returning to its initial height. If the object is thrown initially at a 30° angle, determine the x component and the y component of the initial velocity. (Neglect any effects due to air resistance.)arrow_forward
- Component and polygon method. -You walk 20. blocks north, then 10. Blocks East, then 18 blocks South. What is your displacement?•-A certain river has a current that flows at 2.0 m/s West. If you point your boat, which can move at 5.0 m/s, directly across the stream to the North, what is your resultant velocity?arrow_forward•73 Two highways intersect as shown in Fig. 4-46. At the instant shown, a police car P is distance dp = 800 m from the intersection and moving at speed vp = 80 km/h. Motorist M is distance d, 600 m from the intersection and moving at speed vm = 60 km/h. M VM P Vp (H) -dp Figure 4-46 Problem 73. (a) In unit-vector notation, what is the velocity of the motorist with respect to the police car? (b) For the instant shown in Fig. 4-46, what is the angle between the velocity found in (a) and the line of sight between the two cars? (c) If the cars maintain their veloci- ties, do the answers to (a) and (b) change as the cars move nearer the intersection?arrow_forward• A projectile is released from A with velocity as shown. Determine the horizontal distance, d. 15° VA = 6 m/s 3 marrow_forward
- 44. ••Cody starts at a point 6 km to the east and 4 km to the south of a location that represents the origin of a coordinate system for a map. He ends up at a point 10 km to the west and 6 km to the north of the map origin. (a) Find his average velocity if the trip took him 4 h to complete. (b) Cody walks to his destination at a constant rate. His friend Marcus covers the distance with a combination of jogging, walking, running, and resting so that the total trip time is also 4 h. How do their aver- age velocities compare?arrow_forward49. •A tiger leaps horizontally out of a tree that is 4.00 m high. If he lands 5.00 m from the base of the tree, calculate his initial speed. (Neglect any effects due to air resistance.) SSMarrow_forward• Find the direction and magnitude of the vecto (a) A' = (22 m)ây + (-14 m)ŷ, () в (2.5 m)y + (13 m)ŷ, and (c) A’ + B'. • For the vectors given in Problem 34 expresarrow_forward
- •12-17. A ball is thrown with an upward velocity of 5 m/s from the top of a 10-m high building. One second later another ball is thrown vertically from the ground with a velocity of 10m/s. Determine the height from the ground where the two balls pass each other.arrow_forward43. ••An object experiences a constant acceleration of 2.0 m/s? along the -x axis for 2.7 s, attaining a velocity of 16 m/s in a direction 45° from the +x axis. Find the initial velocity vector of the object.arrow_forward57. •In 1892 Gcorge W. G. Ferris designed a carnival ride in the shape of a large wheel. This Ferris wheel had a diameter of 76 m and rotated one revolution every 20 min. What was the magnitude of the acceleration that riders experienced? SSMarrow_forward
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