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Physics for Scientists and Engineers with Modern Physics
- In a classic clip on Americas Funniest Home Videos, a sleeping cat rolls gently off the top of a warm TV set. Ignoring air resistance, calculate the position and velocity of the cat after (a) 0.100 s, (b) 0.200 s, and (c) 0.300 s.arrow_forwardA spacecraft is traveling with a velocity of Vox=5950 m/s along the +x direction. Two engines are turned on for a time of 817 s. One engine give the spacecraft an acceleration in the +x direction of ax=1.18 m/s2, while the other gives it an acceleration in the +y direction of ay=7.30 m/s2. At the end of the firing, what is (a) Vx and (b) Vy?arrow_forwardA spacecraft starts from rest, and makes a journey to a destination 109000 km from its starting point. It does so by accelerating at a constant rate of 7.56 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 7.56 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take? A 4 hr 0 min B 2 hr 0 min C 2 hr 7 min D 1 hr 29 minarrow_forward
- A particle is initially at rest at the origin at t = 0.00 s. From t = 0.00 s to t = 5.00 s its velocity changes according to v(t) = (3.20 m/s2)t. From t = 5.00s to t = 11.00s its velocity changes according to v(t) = (16.00 m/s) - (1.50 m/s2)(t - 5.00 s). From t = 11.00 s to t = 20.00 s its velocity does not change. What is the position of the particle at t = 16.54?arrow_forwardIn an historical movie, two knights on horseback start from rest 96.9m apart and ride directly toward each other to do battle. Sir George’s acceleration has a magnitude of 0.213m/s^2, while Sir Alfred’s has a magnitude of 0.267 m/s^2. Relative to Sir Georges starting point, where do the knights collide?arrow_forwardA spacecraft starts from rest, and makes a journey to a destination 447000 km from its starting point. It does so by accelerating at a constant rate of 9.82 m/s^2 up to the midpoint of the journey, and then decelerates at the same constant rate of 9.82 m/s^2 for the second half of the journey, ending at rest. How long did the entire journey take?arrow_forward
- On a spacecraft two engines fire for a time of 532 s. One gives the craft an acceleration in the x direction of ax = 4.92 m/s2, while the other produces an acceleration in the y direction of ay = 7.16 m/s2. At the end of the firing period, the craft has velocity components of vx = 3743 m/s and vy = 4808 m/s. Calculate the magnitude of the initial velocity.arrow_forwardA spacecraft is traveling with a velocity of v0x = 5010 m/s along the +x direction. Two engines are turned on for a time of 915 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 2.96 m/s2, while the other gives it an acceleration in the +ydirection of ay = 8.08 m/s2. At the end of the firing, what is a) vx and b) vy?arrow_forwardAn unidentified flying object (UFO) is observed to travel a total distance of 29000 m, starting and ending at rest, over a duration of 4.77 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. 520 g s 260 g s 5,098 g s 2,549 g sarrow_forward
- A spring gun that is mounted at the edge of a 2.0-m-high table launches a steel ball at an angle of 230 above the horizontal with an initial speed of 7.0 m/s. What is the total time of flight of the steel ball? (Assume that g = 9.81 m/s2.) a. 0.80 s b. 0.60 s c. 0.40 s d. 1.0 s e. 1.2 sarrow_forwardTwo cars are initially (2.50+C) km apart on a straight road. If the cars are moving toward each other, car 1 with a speed of (5.40+A) m/s and car 2 with a speed of (7.20+B) m/s, how many seconds will it take before the cars meet? Round your answer to three significant figures. A=8 B=7 C=20arrow_forwardA spacecraft is traveling with a velocity of v0x = 5505 m/s along the +x direction. Two engines are turned on for a time of 846 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 1.00 m/s2, while the other gives it an acceleration in the +y direction of ay = 8.65 m/s2. At the end of the firing, find vx and vy. a) vx = _________m/s (b) vy = _________m/sarrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning