11 In three situations, a single force acts on a moving particle. Here are the velocities (at that instant) and the forces: (1) v= (-4) m/s, F = (6i – 20) N; (2) v= (2i- 3) m/s, F = (-2j + 7k) N; (3) v = (-31 + j) m/s, F = (2i + 6j) N. Rank the situations according to the rate at which energy is being trans- ferred, greatest transfer to the particle ranked first, greatest trans- fer from the particle ranked last.

11 In three situations, a single force acts on a moving particle. Here are the velocities (at that instant) and the forces: (1) v= (-4) m/s, F = (6i – 20) N; (2) v= (2i- 3) m/s, F = (-2j + 7k) N; (3) v = (-31 + j) m/s, F = (2i + 6j) N. Rank the situations according to the rate at which energy is being trans- ferred, greatest transfer to the particle ranked first, greatest trans- fer from the particle ranked last.

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 skier is travelling horizontally across frictionless snow at 10 m/s. He goes up an also frictionless slope and his speed drops to 5 m/s at the top when he resumed moving horizontally. How high did he go?
While two forces act on it, a particle is to move at the constant velocity y - (2.58 m/s) - (-4.96 m/s)j. One of the forces is P 1 = (1.86 N); + (-6.69 N). What is the other force? Number j Units
A force É = (5.90 N )î + (5.40 N )f + (6.40 N )k acts on a 1.20 kg mobile object that moves from an initial position of (4.20 m )î + (2.10 m )ŷ + (7.40 m )k to a final position of á f = (5.90 m )î + (8.20 m )ŷ + (5.50 m )k in 5.70 s. i Find (a) the work done on the object by the force in the 5.70s interval, (b) the average power due to the force during that interval, and (c) the angle between vectors d ; and d f. i (a) Number i Units (b) Number i Units (c) Number i Units
A block is launched up a 3.75 m high frictionless inclined plane (0 = 35.0°) with an %3D initial speed of vo = 12.5 m/s as shown in the figure below. (a) What is the block's %3D speed as it leaves the ramp? (b) How far from the base of the ramp does the block land? (Air resistance is negligible) Vo=12.5 m/s 3.75 m 0= 35.0° X= ?
A trap-jaw ant snaps its mandibles shut at very high speed, a good trait for catching small prey. But an ant can also slam its mandibles into the ground; the resulting force can launch the ant into the air for a quick escape. A 12 mg ant hits the ground with an average force of 47 mN for a time of 0.10 ms; these are all typical values. At what speed does it leave the ground? Answer out to 3 decimal places.
F, (N) 3 1 x (m) 6 8 10 12 14 16 2 4 Question 2 / 13 A force -shown in the figure- acts on a 5kg object moves in a straight line and starts its motion from the origin with speed of 5m/s. What is the speed (in m/s) of the object at x=10 m? 1. O 15.9 2. O11.7 3. 06.0 4. 07.4 5. 05.8
7. An arrow of mass 0.018 kg is shot upward at an angle from the ground, reaching a maximum height of 25 m with a speed of 62 m/s. Neglecting air resistance, with what speed will the arrow hit the ground?
The only force acting on a 1.7 kg body as it moves along the positive x axis has an x component Fx = -4x N, where x is in meters. The velocity of the body at x = 2.0 m is 11 m/s. (a) What is the velocity of the body at x = 3.7 m? (b) At what positive value of x will the body have a velocity of 2.2 m/s? (a) Number 9.91 (b) Number i 7.75 Units Units m/s m
6. Given are 4 points in space: (X,y,z) A (3,2,3) B (0,1,4) C(2,4,1) D(0,5,4) The line of action of force vector F passes from point A to point B and has a magnitude of 20 kN. The line of action of force vector G passes from point C to point D and has a magnitude of 35 kN. What is the summation of forces along the x-axis?
vo t = 0 t = 3.5 s vo = (2.5i + 3.5j) m/s i = (-2.51) m/s The velocity of a 3.0-kg object is shown at two times. What was the magnitude of the average force exerted on the object between t= 0 and t = 3.5s? O 1.74 N O 6.26 N O 14.7 N O 3.23 N O 0.845 N
An object of mass, m = 56 kg starts to slide from rest on a curved ramp from height, H = 37 m above the end of the ramp (as shown in the figure). Consider the ramp to be frictionless and neglect the effects of air resistance. %3D %3D H send of (a) What is the speed of the object at the end of the ramp? (b) If the velocity of the object at the end of the ramp makes an angle 0 = 21° with the horizontal, what is maximum height, h of its jump above the end of the ramp?
An object of the weight of an object W= 3.2N is released from rest at the top of the inclined plane below. What is the velocity of the block at the bottom if the plane has uk=0.33? answer must be in m/s (3 decimal places)