2.A sailor drops a wrench from the top of a sailboat's mast whilethe boat is moving steadily and rapidly in a straight line.Where will the wrench hit the deck?A in front of the mast, along the direction of the motionof the boatOB.impossible to tellat the base of the mastOC.kehind the mast along the direction opposite to themotlorof the boat3.Which of the following would serve as the best time standard?the rotation of Earth upon its axisthe vibration of a Cs-133 atomA.

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Answered: 2. A sailor drops a wrench from the top…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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9. A helicopter travelling horizontally at 50.0 m/s [W] turns steadily, so that after 45.0 s, its velocity is 35.0 m/s [S]. Calculate the average acceleration of the helicopter. A 10. A ball on a pool table bounces off the rail (side), as shown in Figure 5. The ball is in contact with the rail for 3.2 ms. Determine the average acceleration of the ball. 8.2 m/s Figure 5 8.2 m/s 125°
1A. You're feeding the fish at the pond by the baseball field and decide to do some physics calculations. You notice that you release the fish food 1.65 m above the surface of the water, and during one throw, when the food left your hand at 3.20 m/s with a direction of 13.0° below the horizon, you managed to hit a fish near the surface. How fast was the food going right before it hits the fish? 1B.Two kittens are running toward each other, one is named Chloe and the other is named Luna. Luna runs at a speed of 1.40 m/s. If Chloe jumps at an angle of 37.0° with speed 2.70 m/s, at what distance from Luna should Chloe jump to make sure she lands on Luna?
85. A plane travels N30°W at 450 mph and encounters a wind blowing due west at 30 mph. (See Example 9) a. Express the velocity of the plane v, relative to the air in terms of i and j. b. Express the velocity of the wind vw in terms of i and j. c. Express the true velocity of the plane v, in terms of i and j and find the true speed of the plane.
A ball has an initial velocity of 160 m/s at an angle of 30 degrees horizontally. This means that the initial vertical velocity of 80m/s and its initial horizontal velocity is 139m/s. Find its position and velocity after 5 seconds. a. Horizontal Displacement b. Find the Vertical Displacement c. Horizontal and Vertical Component of Velocity
4. A baseball is thrown at an angle of 30 degrees above the horizontal with an initial speed of 8 m/s. If the catcher's hand is vertically higher than the point of origin of the ball by 0.4 m, a. how far horizontally should he be from the pitcher for a perfect catch? b. What is the total time of travel of the ball from the pitcher to the catcher if a perfect catch was made in no. 7?
A dolphin wants to swim directly back to its home bay, which is 0.800 km due west. It can swim at a speed of 4.20 m/s relative to the water, but a uniform water current flows with speed 2.83 m/s in the southeast direction. a. What direction should the dolphin head? Enter the angle in degrees where positive indicates south of west and negative indicates north of west. anser in degrees b. How long does it take for the dolphin to swim the 0.800-km distance home? answer in min
24 ee31.5 Or S wws bom the dt of 4m (e 3. Os the planet Mars, and ohect s thews om the ground and of 3. Whet is the wht is the maimum heighe wd wwle ae und snd lands the ground is i fight a total speed of the Wht is the spesd of the peopecile at the sop of its path
7. A projectile is fired horizontally at 9 m/s from a 7.2 m high wall. a. Find its speed when it reaches the ground. b. At what angle does it hit the ground?
. A stone is thrown from level zero at 30° above horizontal. It lands at the same level 20 m away.a. What is the initial speed of the stone?b. What is the maximum height that it reaches during the flight?c. How long does the whole flight take?
1. In a practice session, Iris hits a ball horizontally with a speed of 36 m/s from a height of 3.1 m. The ball travels until it hits the ground. a. Determine the time the ball is in the air. b. Determine the horizontal distance traveled by the ball. c. Calculate the ball’s velocity as it hits the ground.
5. Two rocks are thrown horizontally off a 180 m cliff. One rock is thrown with a speed of 10 m/s and the other is thrown with a speed of 20 m/s a. How much time does it take each rock to hit the ground? b. How far from the base of the cliff does each rock land? c. What is the horizontal and vertical speed of each rock when it hits the ground?
1. A kicked football leaves the ground at an angle 80 = 37.0" with a velocity of 20.0 m/s. Calculate: a. the maximum height b. the time of travel before the football hits the ground c. how far away it hits the ground? Assume the ball leaves the foot at ground level, and ignore air resistance and rotation of the ball.

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