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 Its speed increases until it reaches a constant value, but its acceleration decreases gradually to zero. O Its speed continues to increase while its acceleration goes to zero. O Both the speed and the acceleration increase. O Its speed slows to zero while its acceleration reaches a terminal value.

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 Its speed increases until it reaches a constant value, but its acceleration decreases gradually to zero. O Its speed continues to increase while its acceleration goes to zero. O Both the speed and the acceleration increase. O Its speed slows to zero while its acceleration reaches a terminal value.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 13OQ: As a raindrop falls through the atmosphere, its speed initially changes as it falls toward the...

See similar textbooks

Similar questions

In the absence of air resistance, which of the following best describes the motion of a freely falling object near the surface of the Earth? (Assume the downward direction is positive.) O The velocity increases but the acceleration remains constant as the object falls. O The velocity and the acceleration both stay constant as the object falls. O The velocity and the acceleration both increase as the object falls. O The velocity stays constant but the acceleration increases as the object falls. Nood Help? Read It
Problem 5: Two blocks are connected by a massless rope as shown below. The mass of the block on the table is m1 = 3.4 kg and the hanging mass is m2 = 1.3 kg. The table and the pulley are frictionless. m, m2
A skydiver jumps out of a hovering helicopter. A few seconds later, another skydiver jumps out, and they both fall along the same vertical line. Ignore air resistance so that both skydivers fall with the same acceleration. Does the difference in their speeds stay the same throughout the fall? Does the vertical distance between them stay the same throughout the fall? II
1. Assume that air resistance is proportional to speed. A parachutist falls from rest. If he did not open his parachute, he would reach a terminal velocity of 90 m/s. With an open parachute, he reaches a terminal velocity of 10 m/s. He opens his parachute 20 s after he started falling. Calculate (a) The distance already fallen at the moment when he opens his parachute; (b) The total distance fallen 40 s after he started falling.
It is possible to shoot an arrow at a speed as high as 100 m/s. (a) If friction can be ignored, how high would an arrow launched at this speed rise if shot straight up? (b) How long would the arrow be in the air?
In the blizzard of ’88, a rancher was forced to drop hay bales from an airplane to feed her cattle. The plane flew horizontally at 160 km/hr and dropped the bales from a height of 80 m above the flat range, (a) She wanted the bales of hay to land 30 m behind the cattle so as to not hit them. Where should she push the bales out of the airplane? (b) To not hit the cattle, what is the largest time error she could make while pushing the bales out of the airplane? Ignore air resistance.
A student at the top of a building of height h throws one ball upward with a speed of i and then throws a second ball downward with the same initial speed i. Just before it reaches the ground, is the final speed of the ball thrown upward (a) larger, (b) smaller, or (c) the same in magnitude, compared with the final speed of the ball thrown downward?
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?
When the pilot reverses the propeller in a boat moving north, the boat moves with an acceleration directed south. Assume the acceleration of the boat remains constant in magnitude and direction. What happens to the boat? (a) It eventually stops and remains stopped. (b) It eventually stops and then speeds up in the forward direction. (c) It eventually stops and then speeds up in the reverse direction. (d) It never stops but loses speed more and more slowly forever. (e) It never stops but continues to speed up in the forward direction.
As a raindrop falls through the atmosphere, its speed initially changes as it falls toward the Earth. Before the raindrop reaches its terminal speed, does the magnitude of its acceleration (a) increase, (b) decrease, (c) stay constant at zero, (d) stay constant at 9.80 m/s2, or (e) stay constant at some other value?
A single-stage rocket is launched vertically from rest, and its thrust is programmed to give the rocket a constant upward acceleration of 5.0 m/s². If the fuel is exhausted 11 s after launch, calculate the maximum velocity Vmax and the subsequent maximum altitude h reached by the rocket. Answers: Vmax h = i i m/s 3
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