8. o The space probe Deep Space 1 was launched on October 24, 1998.Its mass was 474 kg. The goal of the mission was to test a new kind ofengine called an ion propulsion drive. This engine generated only a weakthrust, but it could do so over long periods of time with the consumptionof only small amounts of fuel. The mission was spectacularly successful.At a thrust of 56 mN how many days were required for the probe to attaina velocity of 805 m/s (1800 mi/h), assuming that the probe started fromrest and that the mass remained nearly constant?

Given: The mass of the space probe is 474 kg. The thrust force of the space probe is 56 mN. The…

Answered: 8. o The space probe Deep Space 1 was…

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)...

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8
9. A 58.4 gram tennis ball is thrown down at the ground. Right before it strikes the floor, its speed is 28.8 m/s. The ball then bounces back off the floor, upwards at 20.5 m/s. If the ball is in contact with the floor for 64.4 ms, calculate the average force on the ball (magnitude and direction). Assume the convention that upward is positive. a. 7.53 N; upward b. 44.7 N; upward c. 44.7 N; downward d. 7.53 N; downward e. 2.88 N; upward
Pool players often pride themselves on their ability to impart a large speed to a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in which the player strikes a ball with his pool cue). With the rail removed, a ball can fly off the table, as shown in the figure. h d The surface of the pool table is h = 0.750 m from the floor. The winner of the competition wants to know if he has broken the world speed record for the break shot of 32 mph (about 14.3 m/s). If the winner's ball landed a distance of d = 5.15 m from the table's edge, calculate the speed of his break shot vo. Assume friction is negligible. m/s
A 0.400 kg hammer is moving horizontally at 4.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. (a) Calculate the duration of the impact in seconds. s (b) What was the average force in newtons exerted on the nail? N
How to solve?
A puck of mass m=2 kg moves on a circle of radius r=0.5 meters, on a frictionless table. The puck is attached to an object of mass M=10 kg by a cord that extends through a hole on the table. Find the speed of the puck if the object is at rest. You may take g=10m/s². Select one: O a. 4/3m/s O b.5/2m/s O c. 5m/s O d. 25m/s O e. 4m/s
A 1.0 kg object has a velocity of 5.0f m/s at t = 0. A constant resultant force of (3.0î + 4.0j ) N then acts on the object for 3.0 s. What is the magnitude of object's velocity at the end of the 3.0 s interval? A B C E 9.8m/s 17.7m/s 9.2 m/s 15.0 m/s 16.3 m/s Lütfen birini seçin: O A ов O D O E
Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 4.0 x 104 kg (about 40 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of N for 22.5 s. The ejected gases have a mass that is small compared to the mass of the spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about what approximations or simplifying assumptions you made in your analysis. Also think about the choice of system: what are the surroundings that exert external forces on your system?) 7 (9796.8751 +504000j) = Additional Materials eBook m
Problem B2. A small box of mass m = 1.50 kg starts from rest and glides down a smooth, frictionless hill from a height h = 2.00 m to the base, where it meets a %3D rough plank of mass M = 5.00 kg that is resting on the frictionless horizontal ground surface. Due to the friction between the box and the plank, its speed is reduced until, at a certain moment, it begins to move together with the plank as if they were a single object. %3D M Figure B2. Problem diagram B2 a) Find the speed with which the box reaches the base of the hill.
H4.
I. With external gravitational field In this second part you are asked to analyze rocket propulsion with the present of gravitational field g. This appears for instance when the rocket is launching from the surface of a planet. (1) Describes why you are not allowed to use the momentum conservation here. (2) Evaluate the speed of the rocket measure by inertial observer on the ground as a function of time v(t) if the speed of the gas propulsion with respect to the rocket is vret and the burning rate is constant constant! dm dt (3) Plot v(t) that you obtained from point (2) above, for three different values of gravitational field (assuming similar initial mass), which is: Imoon = 1.62 m/s? • Gearth = 9.81 m/s? Ijupiter = 24.79 m/s? in a single plot, if the burn dm ate is constant = 1500 kg/s. Analyze your result and dt describes how the speed increases for each situation! 20:18 Ai 11/03/2022
A football player, kicked a 0.550 [kg] ball off a rooftop that is 90.0 [m] off the ground, at 20.0 [m/s] oriented 30.0° degree above his horizon. His friend, Josh, caught the ball from a window at a distant building that is 40.0 [m] off the ground. Josh then released the ball from this height and let the ball fall to the ground. What is the speed of the ball just before it reaches Josh? ____ [m/s] What is the speed of the ball just before it reaches the ground? ____ [m/s]

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