VIIIPSS 7.1 Interacting-Objects Problems8 of 27 (>Constants | Periodic TableLearning Goal:To practice Problem-Solving Strategy 7.1 for interacting-objects problems.• Show important points in the motion with a sketch. You may want to give each object a separate coordinate system. Define symbols, list acceleration constraints, and identify what the problem is trying to find.Draw an interaction diagram to identify the forces on each object and all action/reaction pairs.• Draw a separate free-body diagram for each object showing only the forces acting on that object, not forces exerted by the object. Connect the force vectors of action/reaction pairs with dashed lines.A 1230 -kg car is pushing an out-of-gear 2140 -kg truck that has a dead battery. When the driver steps on theaccelerator, the drive wheels of the car push horizontally against the ground with a force of 4440 N . The rolling frictionof the car can be neglected, but the heavier truck has a rolling friction of 770 N , including the "friction" of tuming thetruck's drivetrain. What is the magnitude of the force the car applies to the truck?SOLVE: Use Newton's second and third laws.• Write the equations of Newton's second law for each object, using the force information from the free-body diagrams.· Equate the magnitudes of action/reaction pairs.• Include the acceleration constraints, the friction model, and other quantitative information relevant to the problem.• Solve for the acceleration, and then use kinematics to find velocities and positions.ASSESS: Check that your result has the correct units and significant figures, is reasonable, and answers the question.ModelThe car and the truck are separate objects that form the system. Since only the straight-line motion of the car and truck is involved in this problem, model them as particles. The earth and the road surface are part of the environment.Visualize• Part AWhich of the following diagrams is the correct interaction diagram for the situation described in this problem? Each red line represents an interaction and an action/reaction pair of forces. The labels used in the diagrams are the following:• C= car• T= truckS= road surface• EE = entire earthSystemEESystemEESystemSystemEESubmitRequest AnswerPart B Complete previous part(s)SolvePart C Complete previous part(s)AssessPart D Complete previous part(s)

Mass of Car m1 = 1230 KgMass of Truck m2 = 2140 Kg

Show important points in he motion with a sketch You may want to give each object a separate coordinate system. Define symbols, Ist acceleration constraints, and identty what the problem istrying to find . Draw an interaction diagram to identify the forces on each object and all actioniteaction pairs . Drawa separate fee-body dagram for each object shoving only the forces acting on that object, not forces exerted by the object Connect the force vectors of actionireaction pairs with dashed lines Learning Goal To practice Problem Soving Strategy 7.1 for jeteractiog.stiects problems A 1230 -kg car is pushing an out of gea 2140 kg truck at has a dead battery When the diver steps on the accelerator the drve wheels of the car push horizontally against the ground with a force of 4440 N The roling triction of the car can be neglected, but the heavier truck has a rolling triction of 770 N. including the iction" of tuming the tuck's divetrain What is the magnitude of the force the car apples to the truck SOLVE Use Newton's second and third laws • Wite the equations of Neton's second la for each object using the force information from the free-body dagrams . Equate the magnitudes of actionteactionpairs . Include the acceleration constraints the tiction model and other quanttative information relevant to Pe problem . Solve for the acceleration, and then use kinematics to find velocites and postions ASSESS Check that your resut has the comect units and significant fgures is reasonable, and answers he question Model The car and the truck are separate objects that form the system Since only the straighsine motion of the car and truck is involved in this problem model them as particies. The earth and the road surface are part of the environment Visualie • Part A Which of the folowing diagrams i he comect interaction diagram for the situation desorbed in this probilem Each red line represents an interaction and an actionteaction pair of forces The labels used in the dagrams are the foloving Sad surface . EE- entre eah System System System System