Two boxes are at rest on a smooth, horizontal surface. The boxes are in contact with one another. If box 1 is pushed with a force of magnitude F = 12.6 N, the contact force between the boxes is 9.00 N; if, instead, box 2 is pushed with the force F, the contact force is 3.60 N. In either case, the boxes move together with an acceleration of 1.80 m/s Part A What is the mass of box 1? ν ΑΣφ mi = kg Submit Request Answer Part B What is the mass of box 2?

a A B Three blocks, each of mass 13 kg are on a frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 1.4 m/s?. 1) What is the magnitude of the force on block A from the hand? N Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. +) 2) What is the net horizontal force on block A ? N Submit You currently have O submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. +) 3) What is the horizontal force on block A due to block B? N Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. 4) What is the net horizontal force on block B? N Submit You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more…

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Q2;A horizontal force of 87.2 N is applied to a 40.5 kg crate on a rough, level surface. If the crate accelerates at 1.23 m/s2, what is the magnitude of the force of kinetic friction (in N) acting on the crate? HINT  N

Blocks with masses of 2.0 kg, 3.0 kg, and 4.0 kg are lined up in a row on a frictionless table. All three are pushed forward by a 10 N force applied to the 2.0 kg block. Part A How much force does the 3.0 kg block exert on the 4.0 kg block? Express your answer with the appropriate units. F3.0 on 4.0 = Submit Part B F3.0 on 2.0 = Value Submit Request Answer How much force does the 3.0 kg block exert on the 2.0 kg block? Express your answer with the appropriate units. Value Units Request Answer 巴」? Units I ?

A 4.50 kg box is suspended from the end of a light vertical rope. A time-dependent force is applied to the upper end of the rope, and the box moves upward with a velocity magnitude that varies in time according to v(t) = (2.00m/s²)t + (0.600m/s³)t². Part A What is the tension in the rope when the velocity of the box is 7.00 m/s? Express your answer with the appropriate units. T = Submit ΜΑ Value Request Answer Units ?

A child goes down a playground slide that is inclined at an angle of 26.0° below the horizontal. Part A Find the acceleration of the child given that the coefficient of kinetic friction between the child and the slide is 0.370. a = m/s²

Part D Find the direction of the velocity of the block after the following force has been applied for 6.00 s: a force of 8.00 N directed to the left. to the right O to the left Submit Request Answer

A 50,000 kg locomotive is traveling at 14 m/s when its engine and brakes both fail. Part A How far will the locomotive roll before it comes to a stop? Assume the track is level. Consult your textbook for any data values you may need. Express your answer with the appropriate units. μA 2548.42 m (2 ? Submit Previous Answers Request Answer

Part A A truck with mass m has a brake failure while going down an icy mountain road of constant downward slope angle a (Figure 1). Initially the truck is moving downhill at speed vo. After careening downhill a distance L with negligible friction, the truck driver steers the runaway vehicle onto a runaway truck ramp of constant upward slope angle B. The truck ramp has a soft sand surface for which the coefficient of rolling friction is lr . What is the distance that the truck moves up the ramp before coming to a halt? Solve using energy methods. Express your answer in terms of m, a, vo, L, g, ß and ur. ? (vo +2gL sin a) 2g(u, cos B+ sin ß) Submit Previous Answers Request Answer Figure 1 of 1 X Incorrect; Try Again Provide Feedback Ski's Van Lines L. Distance Icy road Truck ramp TB