Two forces act on a 20.0 kg object. One force has magnitude 60ON directed 45° clockwise from the positive x-axis, and the other has a magnitude 30 N at 60° counter-clockwise from the positive x- axis. What is the magnitude of this object's acceleration? O 4.47 m/s2 O 2.89 m/s2 O 1.30 m/s2 O 1.56 m/s2

Two forces act on a 20.0 kg object. One force has magnitude 60ON directed 45° clockwise from the positive x-axis, and the other has a magnitude 30 N at 60° counter-clockwise from the positive x- axis. What is the magnitude of this object's acceleration? O 4.47 m/s2 O 2.89 m/s2 O 1.30 m/s2 O 1.56 m/s2

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 22PQ: A particle with mass m = 4.00 kg accelerates according to a=(300i+200j) m/s2. a. What is the net...

See similar textbooks

Similar questions

A hockey stick pushes a 0.160-kg puck with constant force across the frictionless surface of an ice rink. During this motion, the pucks velocity changes from 4.00 m/s to (6.00 + 12.00) m/s in 4.00 s. a. What are the scalar components of the force acting on the puck? b. What is the magnitude of the force acting on the puck?
A car is traveling at 30 m/s along a horizontal road. The coefficients of friction between the road and the tires are μₛ = 0.5 and μₖ = 0.3. How far does the car travel before stopping if the car is braked hard with no antilock braking system so that the wheels lock?a. 100 mb. 120 mc. 153 md. 167 m
A cart of mass 8.00 kg was moved by applying two constant forces. Force 1 is 28.0N at 42.0°, and Force 2 is 13.0 N at 110°. Initially, the cart has a velocity of (3.50 i +2.20 j) m/s. EERIN d. What is the acceleration of the cart? Ans. å = (2.05 i + 3.87 j) e. What is the cart's velocity after 5.00 s? or 4.38- Ans. 3 = (13.75 i + 21.55 j)" or 25.56 m m
Only two forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 9.5 N, acting 50° north of west. What is the magnitude of the body's acceleration? m/s²
W S Sand X 1. Two known forces F₁ = 3.85 N at 78.0° below the positive x-axis and F₂ = 3.25 N at 35.0° above the negative x-axis are acting on an object. What is the magnitude of the third force F3 so that the acceleration of the object is zero? N 3 2. A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly f the person's regular weight Calculate the magnitude of the acceleration of the elevator reads 1 38 E D C $ 4 SER R F 5 V B T MacBook Air Y B H 8 N J 9 DD M MOSISO command
m %3D A teacher moves a 16.9 kg desk across the room by applying a 188 N horizontal force. (u = 0.39) Find Fg. Find FN- Find Ff. N. Find the acceleration of the desk. m/s2 Submit Question Question 5 M0/1 pt 5 12 99 O D
20° N W1 W 20° Problem 11 A skier is on a 20° downward slope. The conditions are such that there's no friction or wind resistance to slow them down. If their mass is 70 kg and the acceleration due to gravity is.9.8 m/s² straight down, what's the magnitude of their acceleration? Don't forget units! 1 C
Two masses, m₁ = 65 kg, and m₂ = 81 kg are attached by a massless rope over a massless, frictionless pulley, as shown. Mass m₂ rests on a smooth, frictionless inclined plane of 40°. m₁ m₂ Ꮎ a. Calculate the magnitude of the acceleration of m₁. b. Is m₁ accelerating up or down? Explain. c. Calculate the tension in the rope.
A 1.5-kg mass has an acceleration of (4.0i - 3.0j) m/s². Only two forces act on the mass. If one of the forces is (2.0i - 1.4j) N, what is the magnitude of the other force? 4.1 N 07.1 N 5.1 N O24N 6.1 N
A 30.77 kg boy slides down a water slide with a 45° slope. He was pushed by his friend with a 33.11 N force in a direction parallel to the slide. What is the magnitude of the acceleration (in m/s²) of the boy as he go down the slide? Asume the system looks like a right triangle.
There are two forces on the 5.4 kg crate in the overhead view of the figure below, but only one is shown. For F1= 15.5 N, a = 17.1 m/s², and 0=36.7°, The second force (N) in unit-vector notation is: y O a. -89.54 N i+ -55.18 Nj O b. -55.18 N i+74.04 Nj O c. 74.04 N i+-55.18 Nj O d. -70.68 Ni+-74.04 Nj
9. A train pulls out of a station along straight with a horizontal track five identical freight cars behind it, each of which weighs 90.0 KN. The train 25.0 m/s reaches a speed of within 5.0 mins. Of starting out. Assuming the engine pulls with a this interval, with a magnitude of a force does the coupling between cars pulls forward on the last of the freight cars? Ignore air constant force during resistance and friction the freight cars. a. 733.94N c. 45, 871.56N b. 458.72N d. 2.30KN d. 459 KN