![]() A 500-kg freight elevator is moving upwards towards its destination. A 500-kg freight elevator is descending down through the shaft at a constant velocity of 0.50 m/s.Ĥ5. (The horizontal forces can be summed as vectors divide by the mass to obtain the acceleration value.)Ĥ4. The box encounters a force of friction of 5 N. An 8-N force is applied to a 2-kg box to accelerate it to the right across a table. (A "constant velocity" indicates an acceleration of 0 m/s/s and a balance of forces.)Ĥ3. An 8-N force is applied to a 2-kg box to move it to the right across the table at a constant velocity of 1.5 m/s. (Friction is directed opposite the motion and causes a leftward acceleration no rightward force is spoken of, only a rightward motion.)Ĥ2. The force of friction upon the box is 5 N. A 2-kg box is sliding to the right across a table. (A "terminal velocity" indicates a constant velocity and a balance of forces.)Ĥ1. A 2-kg box equipped with a parachute is falling at a terminal velocity after being dropped from a plane. ("Free-falling" indicates that the only force that influences the motion is the force of gravity.)Ĥ0. A 2-kg box is free-falling from the table to the ground. ("At rest" would indicate a balance of forces and an acceleration of 0 m/s/s.)ģ9. To determine the magnitude of all forces and the net force and acceleration of the object. Part E: Force-Mass-Acceleration RelationshipsĬonstruct free-body diagrams for the following objects label the forces according to type. A picture hangs symmetrically by two wires oriented at angles to the vertical. A downward moving elevator (held by a cable) slows down. An upward moving elevator (held by a cable) slows down. An elevator (held by a cable) is moving upwards at a constant velocity. A car is skidding to a stop (with wheels locked) while traveling to the right across a level roadway surface. A car is moving to the right at a high speed across a level roadway surface the driver's foot remains on the gas pedal. After reaching a terminal velocity, a falling skydiver has opened her parachute. A falling skydiver has reached a terminal velocity. Several seconds after being thrown, a football reaches the precise peak of its trajectory. Several seconds after being thrown, a football is moving upwards and rightwards towards the peak of its trajectory. A ball is dropped from rest from the top of a building. An air track glider is gliding to the right at constant velocity. A rightward-moving box (which was previously set into rightward motion across the floor) gradually slows to a stop.į. A student is pushing lightly upon a large box in an attempt to push it to the right across the floor, but the box fails to move.Į. ![]() A book is being pushed to the right across a table surface and accelerating in the direction of the push. A book is being pushed to the right across a table surface with a constant velocity. As is always done in free-body diagrams, label the forces according to type and draw the arrows such that their length reflects the magnitude of the force.ī. Construct free-body diagrams for the following physical situations at the instant in time for which they are described. Part D: Drawing and Interpreting Free-Body Diagramsģ7. Newton's Laws - Home || Printable Version || Questions with LinksĪnswers to Questions: All || #1-7 || #8-36 || #37-46 || #47-60 The Review Session » Newton's Laws of Motion » Answers Q#29-42 Newton's Laws of Motion Review ![]()
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