2. During a demolition derby, 2 cars are initially facing each other so they will be moving in opposite directions. Thered car accelerates from rest at 3m/s?. The green car, initially moving at 4m/s, accelerates at 1.8 m/s². If theystart 100m from each other, where will they collide? 5.68s at 48.4m3. During a demolition derby, 2 cars are initially facing each other so they will be moving in opposite directions. T3m/s2. The green car, initially moving at

Given: The intial velocity of the red car is 0 m/s, and acceleration is 3 m/s2. The initial velocity…

Answered: 2. During a demolition derby, 2 cars…

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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A. 53.76 s D. 64.87 s B. 48.63 s E. 65.66 s C. 60.00 s F. 74.72 s 1--1 IXXKI Within the jet stream, a plane flies 200 m/s at 18° South of West. The jet stream itself is moving 120 m/s due North. Find the velocity of the jet relative to the ground. 6. magnitude A. 198.9 m/s B. 163.9 m/s 131.4 m/s 201.5 m/s 266_m/s C. 312.7 m/s 1--1 direction A. 18.5° N of W D. 17.01° N of W B. 23.12° N of W E. 29.54° N of W C. 22.93° N of W F. 33.97° N of W 1--1 IVOLG A river has a 6.5 m/s current due East. With respect to the water, the boat's velocity is 16 m/s at 84° north of east. What is the velocity of the boat relative to the Earth? (State the angle relative to due East.) 8. magnitude 17 99 m/s D 2762 m/s MacBook Pro 7. DEE E.
A person holds a rifle parallel to the ground and fires the rifle at the same moment he drops a bullet from the same height. What happens? Select one: a.The rifle bullet hits the ground first. b.The dropped bullet hits c.Both bullets hit the ground at the same time.
A space probe leaves the solar system to explore interstellar space. Once it is far from any stars, when must it fire its rocket engines? A. only when it wants to slow down B. when it wants to speed up C. all the time, in order to keep moving 19 D. only when it wants to turn E. only when it wants to speed up
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?
A How long is the "x" component of vector A X a. 3 b. 1 C.4 d. 5
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.
1. Disregarding the ball's dimensions, calculate the magnitude Va of the initial velocity of the basketball and its velocity as it goes through the basket. A. How does neglecting the size of the ball affect the determination of the basketball's initial velocity? B. Can other factors, such as air resistance or spin, also be neglected when determining the magnitude of the basketball's initial velocity and its velocity through the basket?
4. There are two frogs named Eroggy and Jumpy. They jumped from the top of a vertical cliff. Froggy just drops and reaches the ground in 3.50 s, while Jumpy jumps horizontally ((bida bida siya, char! Hahall with an initial speed 95 cm/s. a. How far from the base of the cliff will Jumpy hit the ground? b. How high is the vertical cliff? c. If Jumpy jumps with an angle of 30 degrees with respect to the horizontal, what should be its initial velocity for it to land on the same spot as he did when he jumped horizontally?
3. The blue F1 Ford truck is travelling at 5 mph as it strikes the black SUV which then strikes the red vW Bug. Assuming all vehicles are manual transmission and in neutral (so we can make a valid assumption of ignoring friction), determine post-impact velocity of each vehicle. COR is 0.7. 3500 Ib 4100 Ib 2200 Ib
1. The president's airplane, Air Force One, flies at 250 m/s to the east with respect to the air. The air is moving at 35 m/s to the north with respect to the ground. Find the velocity of Air Force One with respect to the ground. 252 m/s c. 222 m/s b. 435 m/s d. 125 m/s 2.A motorboat, which has a speed of 5 meters per second in still water, is headed east as it crosses a river flowing south at 3.3 meters per second. What is the magnitude of the boat's resultant velocity with respect to the starting point? C. 5 m/s b. 6 m/s d. 8.3 m/s a. 3.3 m/s 3. A person observes a fireworks display from a safe distance of 0.750 kilometer. Assuming that sound travels at 340 meters per second in air, what is the time between the person seeing and hearing a fireworks explosion? a. 0.453 S c. 2.21 s b..410 s d. 255,000 S 4. A child walks 5 meters north, then 4 meters east, and finally 2 meters south. What is the magnitude of the resultant displacement of the child after the entire walk? a. 1 m c. 5 m b.…
On planet #3, you fire a projectile horizontally from the edge of a vertical cliff 69.9 m above the ground, with an initial speed of 59.8 m/s. The projectile lands 67.2 m away from the base of the cliff. What is the value of g for planet #3? a. 183.63 m/s^2 b. 110.71 m/s^2 c. 55.35 m/s^2 d. 49.18 m/s^2 2. On planet #4, you fire a projectile from the ground at an initial speed of 20.0 m/s at an angle of 43.1 degrees above the horizontal. The projectile lands 78.7 m away from the launch point. What is the value of g for planet #4? a. 3.5 m/s^2 b. 309.0 m/s^2 c. 211.6 m/s^2 d. 5.1 m/s^2
A javelin thrower standing at rest holds the center of the javelin behind her head, then accelerates it through a distance of 70cm as she throws. She releases the javelin 2.0m above the ground traveling at an angle of 30° above the horizontal. In this throw, the javelin hits the ground 62m away. a. What was the acceleration of the javelin during the throw? Assume that it has a constant acceleration. b. What is the speed of the javelin as it leaves the hand of the thrower? c. What is the maximum height reached by the javelin? O 10.5m 9.8m O 8.5m O 7.0m

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