QUESTION 8 Two forces are applied to a 4.0 kg cart on a frictionless surface as shown. At a certain instant, FA reads 12 N and FR reads 18 N. What is the acceleration of the cart at this instant, in m/s4? Your answer needs to have 2 significant figures, include the negative sign in your answer if needed. (No unit is needed in your answer, it is already given in the question statement.) Click Save and Submit to save and submit. Click Save All Answers to save all answvers.

QUESTION 8 Two forces are applied to a 4.0 kg cart on a frictionless surface as shown. At a certain instant, FA reads 12 N and FR reads 18 N. What is the acceleration of the cart at this instant, in m/s4? Your answer needs to have 2 significant figures, include the negative sign in your answer if needed. (No unit is needed in your answer, it is already given in the question statement.) Click Save and Submit to save and submit. Click Save All Answers to save all answvers.

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 cabinet of mass 5.0 kg is at rest on a ramp as shown. What is the magnitude of the normal force on the cabinet, in Newtons? Use g = 10 m/s2. %3D Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. 30.0°
The lower block in the figure is pulled on by a rope with a tension force of 20 N. The coefficient of kinetic friction between the lower block and the surface is 0.27. The coefficient of kinetic friction between the lower block and the upper block is also 0.27. What is the acc of the 2.0 kg block? I can't figure out how to set the FBD up correctly. See figure for a picture
A penguin starts from rest and accelerates across the snow at a constant rate until he hits the ice, as depicted in the figure below. He then throws himself down and begins to slide along on the frictionless ice. He then goes over the edge into an ice gully and slides up a vertical ice cliff on the other side. Speeds up to here then starts sliding Highest point. that he reaches Starts at rest D Snow Ice F a) Draw a curved line on your paper that represents the shape of the snow and ice (you don't have to draw the penguins). Add points to your drawing that are like the labeled points above. Along your line, draw an arrow to represent the penguin's veloc- ity at each of the labeled points, including roughly scaling the lengths of the velocity vectors to represent the penguin's speed at each point. If it is zero at any point then write "v = 0" by the point. b) Draw arrows to represent the direction of the penguin's acceleration at each of the labeled points. If the acceleration is zero at…
Constants The two forces F1 and F2 shown in (Figure 1) act on a 29.0-kg object on a frictionless tabletop. Suppose that F1 = 10.0 N , and F2 = 18.0 N. Part E %3D Determine the angle between the positive x axis and the net force FRb on the object for the diagram (b), measured countercockwise. Express your answer using three significant figures. ? Ob = Figure 1 of 1 > Submit Request Answer Part F F2 Determine the magnitude of the acceleration of the object for the diagram (b). 120° Express your answer to three significant figures and include the appropriate units. 90° F2 Value Units ab = (a) (b)
A 100 N box experiences 38 N of friction when it slides across a table with an acceleration of +4.7 m/s2. Use the diagram below to match each item with the correct value. Units are not given in this question. Fnorm = Ffrict = P= m= a = Fnet = Fgrav= Fapp = ✓ What is the mass of the box? A. 10 ✓ What is the applied force acting on the box? B. 15 ✓ What is the net force acting on the box? C. 0.45 ✓ What is the coefficient of friction between the box and the table? D. 47 E. 0.38 F.85
A cabinet of mass 3.7 kg is at rest on a ramp as shown. What is the magnitude of the friction force on the cabinet, in Newtons? The coefficients of friction between the cabinet and ramp are Ps = 0.850 and uk = 0.750. Use g = 10 m/s2. (Hint: what type of friction is it?) Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. 30.0
You are pulling a sled across a snow-covered field. The rope that you are using to pull the sled makes an angle 0 with the horizontal as shown in the figure below. The sled is moving at a constant velocity of 2 m/s to the right in the figure You cannat neglect friction in this problem. Use this information to answer the next 3 questions. 4+y +X
Drag force is an important concept in automobile design. It is modeled as Fa = 0.5PVAC4 where Fa = drag force [lb] air density [slugs/ft³] V = speed of vehicle [ft/s] A = frontal area of car [ft2] Cả = drag coefficient [?] What must be the units for Ca? Show all steps. Break down into fundamental dimensions. Ed
A man pulling an empty wagon causes it to accelerate at 1.4 m, m/s². Part A What will the acceleration be if he pulls with the same force when the wagon contains a child whose mas three times that of the wagon? Express your answer in meters per second squared. a = ΨΕ ΑΣΦ ? m/s²
Suppose the coefficient of kinetic friction between m and the plane in (Figure 1) is =0.27, and that ma mn22 kg Ignore masses of the (frictionless) pulley and the cord. Part A As mg moves down, determine the magnitude of the acceleration of m, and ma given 35 Express your answer to two significant figures and include the appropriate units. Value Units Submit Request Answer Part B What smallest value of will keep this system from accelorating? Express your answer using two significant figures. Figure Submit Beauest Answer
2. Consider the following recursive formula for the velocity of freefalling parachute Drag coefficient is variable. Considering given constants, and the values in the table, fill the missing entries. Show your calculation steps. v(ti+1)= v(t₁) + (g-v(ti)²) (t₁+1 - ti) M [kg] g [m/sec²] At [sec] Initial velocity [m/sec] Time [sec] 0 0.5 1 1.5 2 Velocity [m/sec] 0.000 8.112 7.259 80 9.81 0.5 0 Drag coefficient [kg/m] 0.25 15 (Ca/m)*v² [m/sec²] 0.000 0.075 13.131 11.515 9.880 dv/dt [m/sec²] 9.8100 9.7348 -3.3212 -1.7052 -0.0705 Av [m/sec] 4.905 .867 -1.661 -0.853 -0.035
A student wants to learn about falling objects, so she drops a hammer, paper ball and marble from three different heights. She records the drop time and final speed for each trial as shown on the diagram and the mass (in grams) of each object is shown. Notes Answers have 5% tolerance to allow for estimation. Note that you have multiple attempts for each answer, so we recommend checking answers one at a time. We also recommend Desmos' graphing application to create graphs when necessary! Hammer Paper Ball Marble (mass: 3565g) (mass: 93g) (mass: 68g) 30m 60m 90m 30m 60m 90m 30m 60m 90m 2.475 3.50s 4.28s 5.83s 10.35 14.8s 2.47s 3.50s 4.285 24.2m/s 34.3m/s 42.0m/s 6.68m/s 6.68m/s 6.68m/s 24.2m/s 34.3m/s 42.0m/s 1. True or False: If two objects are dropped from the same height, the more massive object will always fall faster.