Concept explainers
ǁ BIO Physiological effects of large acceleration. The rocket-driven sled Sonic Wind No. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track that is 1080 m long. Starting from rest, it can reach a speed of 1610 km/h in 1.80 s. (a) Compute the acceleration in m/s2 and in g’s. (b) What is the distance covered in 1.80 s? (c) A magazine article states that, at the end of a certain run, the speed of the sled decreased from 1020 km/h to zero in 1.40 sand that, during this time, its passenger was subjected to more than 40g. Are these figures consistent?
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
College Physics (10th Edition)
Additional Science Textbook Solutions
University Physics Volume 1
The Cosmic Perspective (8th Edition)
Conceptual Physical Science (6th Edition)
Lecture- Tutorials for Introductory Astronomy
Tutorials in Introductory Physics
College Physics: A Strategic Approach (3rd Edition)
- Physics Review A hockey player strikes a puck, giving it an initial velocity of 10.0 m/s in the positive x-direction. The puck slows uniformly to 6.00 m/s when it has traveled 40.0 m. (a) What is the pucks acceleration? (b) At what velocity is it traveling after 2.00 s? (c) How long does it take to travel 40.0 m? (See Section 2.5.)arrow_forwarde rocket-driven sled Sonic Wind No. 2, used for investigating the physiological effects of large accelerations, runs on a straight, level track 1070 m (3500 ft) long. Starting from rest, it can reach a speed of 224 m/s(500 mi/h) in 0.900 s. (a) Compute the acceleration in m/s, assuming that it is constant. (b) What is the ratio of this acceleration to that of a freely falling body (8)? (c) What distance is covered in 0.900 s? (d) A magazine article states that at the end of a certain run, the speed of the sled de- creased from 283 m/s (632 mi/h) to zero in 1.40 s and that during this time the magnitude of the acceleration was greater than 40g. Are these figures consistent?arrow_forwardS roller coaster rapidly picks up speed as it roles down a slope. As it startx down the slope the speed is 4 m/s. But 3 seconds later, at the bottom of the slope its speed is 22 m/s. What is the average acceleration.arrow_forward
- At time t = 0, a particle has a velocity of m v = 4.00. The following graph shows the particles a(t) S acceleration vs. time. a. What was the particle's velocity at t = 3.00s ? 2 4 t b. What was the particle's instantaneous acceleration time(s) at t = 3.00s ? С. What was the average acceleration between t = 1.00s and t = 3.00s ? 4- 2. acceleration(m/s)arrow_forwardA bus moves along an x-axis a distance of 800 m, starting at rest (at x = 0) and ending at rest (at x = 800 m). Through the first 2 of that distance, its acceleration is +2.15 m/s?. Through the rest of the distance, its acceleration is -0.92 m/s?. Calculate a) time taken to cover the first half of the distance? b) the bus's maximum speed? c) total time to cover 800 m distance? Sketch velocity time graphs.arrow_forwardA small block has constant acceleration as it slides down a frictionless incline. The block is released from rest at the top of the incline, and its speed after it has traveled 6.00 mm to the bottom of the incline is 3.80 m/sm/s. A). What is the speed of the block when it is 4.60 mm from the top of the incline? Express your answer with the appropriate units.arrow_forward
- Chapter 02, Problem 086 A motorcyclist who is moving along an x axis directed toward the east has an acceleration given by a = (6.20 - 2.20t) m/s2 for 0 s t S 6.0 s. At t = 0, the velocity and position of the cyclist are 2.90 m/s and 7.3 m. (a) What is the maximum speed achieved by the cyclist? (b) What total distance does the cyclist travel between t = 0 and 6.0 s? Units (a) Number (b) Number Units Click if you would like to Show Work for this question: Open Show Work SAVE FOR LATER SUBMIT ANSWER Question Attempts: Unlimited odf section 8.2.pdf Show all 1:40 PM e to search ENG 3/21/2021 16 home pause .PSUp וm) prt sc F10 end f12Pgdn break insert delet & 7. 8 backs - 近arrow_forwardYou are driving along Lawrence Ave. at 60 km/h. You see the traffic light ahead is still green and decide to speed up to try to make it through the intersection before it turns red (poor decision!). Your car accelerates at 1.3 m/s. You reach the light after accelerating for 4.3 seconds. What is your speed at the light in m/s? V =v, +aAt A: Pictorial Representation Sketch showing events, describe events, coordinate system, label givens & unknowns with symbols, conversions B: Physics Representation Motion diagram, motion graphs, velocity vectors, events a C: Word Representation Describe motion (no numbers),-assumptions, estimated result (no calculation) D: Mathematical Representation Describe physics of steps, complete equations, algebraically isolate, substitutions with units, final statement of prediction E: Evaluation Answer has reasonable size, direction and units? Why?arrow_forwardYou are driving along Lawrence Ave. at 60 km/h. You see the traffic light ahead is still green and decide to speed up to try to make it through the intersection before it turns red (poor decision!). Your car accelerates at 1.3 m/s?. You reach the light after accelerating for 4.3 seconds. What is your speed at the light in m/s? v, =v, +aAt A: Pictorial Representation Sketch showing events, describe events, coordinate system, label givens & unknowns with symbols, conversions B: Physics Representation Motion diagram, motion graphs, velocity vectors, events LLL. a +x t C: Word Representation Describe motion (no numbers),-assumptions, estimated result (no calculation) D: Mathematical Representation Describe physics of steps, complete equations, algebraically isolate, substitutions with units, final statement of prediction E: Evaluation Answer has reasonable size, direction and units? Why?arrow_forward
- Songlu loves Vin Diesel and has watched every Fast and Furious movie, even Tokyo Drift! To get Vin Diesel's attention on TicTok she decides to redo one of his movie stunts. Songlu rents a Porsche 911 convertible, pays the extra $10 per day for insurance, and then drives to Big Bear. When she gets there, Songlu puts on her parachute and drives at a speed of 215 mph (96.1 m/s) off of a 450 m tall cliff, jumping out mid air so she can use her parachute on the way down. How far does Rubbab's rented Porsche 911 land from the base of the cliff? O 832 m O 614 m O 1,230 m O 921 marrow_forwardIn 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville Salt Flats in Utah, with a maximum speed of 183.58 mi/h. The one‐way course was 5.00 mi long. Acceleration rates are often described by the time it takes to reach 60.0 mi/h from rest. If this time was 4.00 s, and Burt accelerated at this rate until he reached his maximum speed, a. how long did it take Burt to complete the course? b. Sketch position vs time, velocity vs. time, and acceleration vs. time graphs for the race.arrow_forwardThe acceleration of a jeepney is given by ax(t) = at - Bt^2; where a= 1.50 m/s^3 and ß = 0.120 m/s^4 The motorcycle is at rest at the origin when time t=0. a. Find its position and velocity as functions of time. b. Calculate the maximum velocity it attains.arrow_forward
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning