Which of the following is true of the rock in this figure as it falls after being dropped from a great height?O Its speed decreases while its acceleration continues to increase.O Both the speed and the acceleration increase.O Its speed continues to increase while its acceleration goes to zero.O Its speed slows to zero while its acceleration reaches a terminal value.O Its speed increases until it reaches a constant value, but its acceleration decreases gradually to zero.(a)(b)(c)escG Search or type URL%2324&く 6

Rock is dropped from a great height . Viscous drag force due to medium is directly proportional to…

Answered: Which of the following is true of the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 11P: The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a...

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The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of 5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long, all the way to the tree. With what speed does the car then strike the tree?
Which of the following statements is true of a ball that is thrown upward, reaches its highest point, and then falls back to Earth? Select all that apply. A. As the ball falls back toward Earth, the acceleration will cause the ball to speed up by 10 m/s/s. B. As the ball rises, the acceleration will cause the ball to speed up by 10 m/s/s. C. As the ball falls back toward Earth, the acceleration will cause the ball to slow down by 10 m/s/s. D. At the top of its path, the velocity will be zero. E. At the top of its path, the acceleration will be zero. F. As the ball rises, the speed of the ball will be constant at 10 m/s.
A car is at rest at the top of a driveway that has a slope of 18.4 degrees. Unbeknownst to the owner, the brake of the car is released. (a) Find the acceleration (in m/s/s) of the car down the driveway. m/s/s (b) Find the time (in seconds) it takes the car to reach the street 7.31 m away (as measured along the incline). s
The pilot of a jet transport brings the engines to full takeoff power before releasing the brakes as the aircraft is standing on the runway. The jet thrust remains constant, and the aircraft has a near-constant acceleration of 0.44g. If the takeoff speed is 150 km/h, calculate the distance s and time t from rest to takeoff. Ans: s = _____ m t = _____ s
A woodpecker’s brain is specially protected from large decelerations by tendon-like attachments inside the skull. While pecking on a tree, the woodpecker’s head comes to a stop from an initial velocity of 0.600 m/s in a distance of only 2.00 mm. (a) Find the acceleration in m/s^2 and in multiples of g (g=9.80m/s^2). (b) Calculate the stopping time.
.A truck starts from rest at t = 0 and reaches a final speed v at time t. Which of the following statements is/are true if the acceleration of the of the truck is constant (and nonzero) during this time? The car travels a distance vt. The average speed of the car is v/2. The magnitude of the acceleration of the car is v/t. The velocity of the car remains constant.
When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion? A. Both its acceleration and its velocity are constant B. Neither its acceleration nor its velocity is constant C. Its acceleration is constant D. Its velocity is constant
An apple is falling from an apple tree. Which of the following statements is true? a. Speed and acceleration of the apple remains constant b. Speed of the apple decreases and its acceleration remains constant c. Speed of the apple remains constant and its acceleration increases d. Speed of the apple increases and its acceleration remains constant
An experimental rocket designed to land upright falls freely from a height of 2.18 102 m, starting at rest. At a height of 94.3 m, the rocket's engines start and provide constant upward acceleration until the rocket lands. What acceleration is required if the speed on touchdown is to be zero? (Neglect air resistance.)m/s2
If the effects of atmospheric resistance are accounted for, a freely falling body has an acceleration defined by the equation a = 9.81[1 - v ^2 (10 ^-4)] m/s^2, where v is in m/s and the positive direction is downward. If the body is released from rest at a very high altitude, determine (a) the velocity when t = 5 s, and (b) the body’s terminal or maximum attainable velocity (as t S ).
Which of the following will happens when driver steps on the accelerator? * a. No fuel is consumed. b. The car has a negative acceleration. c. The car covered less distance. d. The car speeds up
A rocket is launched vertically upward from rest on the ground, and its thrust gives the rocket a constant upward acceleration of 6m/s?. If the fuel is exhausted 19.6 seconds after the launch, what was the maximum altitude that can be reached by the rocket?

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