In the lab we saw that we are making the cart move with the help of a battery powered fan attached on the cart. Suppose the track is nearly frictionless and very long. We turn on the fan, let it run for sometime, then turn it off. We see that the cart O gradually slows down and comes to a stop. O gradually slows down and continues with constant velocity. O just continues with constant velocity slows down, stops, then starts going in the opposite direction.

In the lab we saw that we are making the cart move with the help of a battery powered fan attached on the cart. Suppose the track is nearly frictionless and very long. We turn on the fan, let it run for sometime, then turn it off. We see that the cart O gradually slows down and comes to a stop. O gradually slows down and continues with constant velocity. O just continues with constant velocity slows down, stops, then starts going in the opposite direction.

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)...

See similar textbooks

Similar questions

A certain hawk can fly horizontally (i.e., not diving) at a maximum speed of 80.0 km/hr The hawk can decelerate at a much higher rate of 2.75 m/s2 . a. If initially flying at its top speed, how much time does it take for the hawk to come to a stop? b. How far does it travel during this time? c. If the hawk has a mass of 1.1 kg, what is the average force that must be applied by its wings in order to come to a stop?
a, m's Kalkış 12 1. S The acceleration of an airplane changes until it takes off. as shown in the figure. Find the take-off speed of the airplane that first started moving without speed and the distance it travels on the runway Load Choose a File Next ASUS 180/ 112 IA 17 96 & 8. * 5. 1/2 %24 T Y U Ğ J K L F C V M alt gr ctri 目 10
A. Select the appropriate choice for each statement. (greater than, less than, or equal to)The magnitude of the acceleration at P is ... that at T. (greater than, less than, or equal to)The speed at S is ... that at P. (greater than, less than or equal to)The speed at P is ... that at T. (greater than, less than or equal to)The speed at N is ... that at T. (greater than, less than or equal to)The x-acceleration at S is ... 0. (greater than, less than or equal to)The magnitude of the acceleration at U is ... that at R.
You want to figure out just how crazy a driver your friend is. As one of many stop lights begins to change green, you produce a small metal ball on a string and let the ball hang down. As usual, your friend floors the accelerator and you note that while the car is accelerating, the ball sweeps back toward the back of the car so that the ball’s string makes an angle of about 35 degrees with the vertical. What is acceleration of the car in both meters per second squared and in terms of g’s (an acceleration equivalent to what multiple of Earth’s gravitational acceleration g)?
The trap-jaw ant, found throughout tropical South America, catches its prey by very rapidly closing its mandibles around its victim. Shown is the speed of one of its mandible jaws versus time in microseconds. a. What is the maximum acceleration of the ant’s mandible? b. The mass of a trap-jaw ant’s mandible has been estimated to be about 1.3 x 10-7 kg. Estimate the maximum force exerted by one mandible.
Juliet drops a 0.25 kg grapefruit from the 3rd-floor balcony (10 m high), into Romeo's waiting hands (1 m high). c) what duration does the grapefruit fall, from drop to catch? 0.918 s 0.433 s O 1.355 s -4.243 s (1) O 1.010 s -1.355 s O 4.243 s 1.917 s O 0.6776 s 1.020 s O 0.714
4. Our second-to-last parachuting idiot (whose mass is 50okg) of the semester has jumped from a height of 20,000m. Her parachute is broken, obviously. Ignoring air resistance, how long will it take her to reach the Earth? At what speed would she hit the a. ground? b. She is subject to a linear air resistance term and a quadratic air resistance term. Which of these terms is likely to dominate? Why? C. Including air resistance, at what velocity will she strike the Earth? (Assume the coefficient to be 0.3Ns/m for quadratic or 0.3 Ns/m for linear, depending on your answer for part b.)
Show and explain the complete solution with the formulas. Label the symbols used accordingly.
Driving down the road at a speed of 23.9 m/s, you suddenly notice a fallen tree blocking the road a distance of 82.0 m ahead of you. You step on the brake pedal and decelerate at a constant rate. What must the magnitude of your acceleration be so that you will come to a stop 6.6 m in front of the tree? a. 3.79 m/s^2 b. 3.48 m/s^2 c. 3.22 m/s^2 d. 7.58 m/s^2
The equation of motion of a particle, which started at t = 0, is given by x=5sin(20t+π/3), where x is in centimeter and t in second. a. When does the particle first come to rest? b. When does the particle first have zero acceleration? c. When does the particle first have maximum speed?
Archibald, an aging geezer, is out bicycling one fine afternoon, reliving his glorious youth and oblivious to the world around him. As he approaches a busy intersection, a police officer directing traffic blows his whistle to get Archie’s attention so he’ll slow down and stop. But Archie doesn’t stop; he just speeds right through the intersection as if the traffic cop wasn’t even there. The cop radios one of his colleagues and gets her to stop the old geezer. She gives him a traffic citation for failing to heed the command of a police officer directing traffic. When the case gets to traffic court, Archie explains to the judge that he didn’t hear the officer’s whistle because he is going deaf and cannot hear frequencies above 3000 Hz. The traffic cop informs the judge that his standard issue police whistle emits a frequency of 2100 Hz and he has a certificate to prove it. Thinking quickly (at least for an old geezer) Archie says that it may be true that the police whistle emits a sound…
A 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 6.60 m to the bottom of the incline is 3.80 m/s. Q: What is the speed of the block when it is 3.80 m from the top of the incline?