Velocity momentum impulse Force Weight.

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Presentation transcript:

velocity momentum impulse Force Weight

Newton’s Laws Of course: Law 1: Law 2: For two objects isolated from any other influence Law 3:

N1T.3 A large car drags a small trailer in such a way that their common speed increases rapidly. Which tugs harder on the other? A. The car tugs harder on the trailer than vice versa. B. The trailer tugs harder on the car than vice versa. C. Both tug equally on each other. D. The trailer exerts no force on the car at all. E. There is not enough information to tell.

N1T.3 A large car drags a small trailer in such a way that their common speed increases rapidly. Which tugs harder on the other? A. The car tugs harder on the trailer than vice versa. B. The trailer tugs harder on the car than vice versa. C. Both tug equally on each other. D. The trailer exerts no force on the car at all. E. There is not enough information to tell.

N1T.4 A parent pushes a small child on a swing so that the child moves rapidly away while the parent remains at rest. How does the magnitude of the force that the child exerts on the parent compare to the magnitude of the force that the parent exerts on the child? A. The force on the child is larger in magnitude. B. The force on the parent is larger in magnitude. C. The forces have equal magnitudes. D. The child exerts zero force on the parent. E. There is not enough information to tell.

N1T.4 A parent pushes a small child on a swing so that the child moves rapidly away while the parent remains at rest. How does the magnitude of the force that the child exerts on the parent compare to the magnitude of the force that the parent exerts on the child? A. The force on the child is larger in magnitude. B. The force on the parent is larger in magnitude. C. The forces have equal magnitudes. D. The child exerts zero force on the parent. E. There is not enough information to tell.

N1T.5 A spaceship with a mass of 24,000 kg is traveling in a straight line at a constant speed of 320 km/s in deep space. What is the magnitude of the net thrust force acting on this spaceship? A. 7.7 MN B. 7.7 GN C. 75 N D. 0.075 N E. 0

N1T.5 A spaceship with a mass of 24,000 kg is traveling in a straight line at a constant speed of 320 km/s in deep space. What is the magnitude of the net thrust force acting on this spaceship? A. 7.7 MN B. 7.7 GN C. 75 N D. 0.075 N E. 0

N1T.6 Arrows representing four forces having equal magnitudes are shown below. What combinations of these forces, acting together on the same object, will allow that object to move with a constant velocity? A. F2 and F3 B. F3 and F4 C. F1, F2, and F4 D. F1, F3, and F4 E. A and D F. None of the above. F1 F4 F2 F5 F3

N1T.6 Arrows representing four forces having equal magnitudes are shown below. What combinations of these forces, acting together on the same object, will allow that object to move with a constant velocity? A. F2 and F3 B. F3 and F4 C. F1, F2, and F4 D. F1, F3, and F4 E. A and D F. None of the above. F1 F4 F2 F5 F3

B. FKF (Kinetic Friction) C. FSF (Static Friction) N1T.7 The free-body diagram in the figure is supposed to represent a box sliding at a constant speed toward the right along a tabletop as it is pulled by a string. How should we label the leftward force? A. FD (D=drag) B. FKF (Kinetic Friction) C. FSF (Static Friction) D. The diagram is incorrect: the left force should not be there at all. Fg FT FN

B. FKF (Kinetic Friction) C. FSF (Static Friction) N1T.7 The free-body diagram in the figure is supposed to represent a box sliding at a constant speed toward the right along a tabletop as it is pulled by a string. How should we label the leftward force? A. FD (D=drag) B. FKF (Kinetic Friction) C. FSF (Static Friction) D. The diagram is incorrect: the left force should not be there at all. Fg FT FN

B. FKF (Kinetic Friction) C. FSF (Static Friction) N1T.7b The free-body diagram in the figure is supposed to represent a cylinder rotating without slipping at a constant speed toward the right along a tabletop as it is pulled by a string from its axle. How should we label the leftward force? A. FD (D=drag) B. FKF (Kinetic Friction) C. FSF (Static Friction) D. The diagram is incorrect: the left force should not be there at all. Fg FT FN

B. FKF (Kinetic Friction) C. FSF (Static Friction) N1T.7b The free-body diagram in the figure is supposed to represent a cylinder rotating without slipping at a constant speed toward the right along a tabletop as it is pulled by a string from its axle. How should we label the leftward force? A. FD (D=drag) B. FKF (Kinetic Friction) C. FSF (Static Friction) D. The diagram is incorrect: the left force should not be there at all. Fg FT FN

D. The diagram is wrong: the right force should not be there. N1T.8 The free-body diagram below is supposed to represent a rock at the end of a string which is being whirled clockwise in a vertical circle. The rock is at the top of its circular path at the instant shown. How should we label the rightward force? A. FM(force of motion) B. FI(force of inertia) C.FD (D=drag) D. The diagram is wrong: the right force should not be there. E. The diagram is wrong: there should be a leftward force instead of a rightward force. FD FT Fg

D. The diagram is wrong: the right force should not be there. N1T.8 The free-body diagram below is supposed to represent a rock at the end of a string which is being whirled clockwise in a vertical circle. The rock is at the top of its circular path at the instant shown. How should we label the rightward force? A. FM(force of motion) B. FI(force of inertia) C.FD (D=drag) D. The diagram is wrong: the right force should not be there. E. The diagram is wrong: there should be a leftward force instead of a rightward force. FD FT Fg

N1T.8 How should we label the upward force? A. FM(force of motion) B. FI(force of inertia) C.FD (D=drag) D. The diagram is wrong: the upward force should not be there. E. The diagram is wrong: there should be a downward force instead of a rightward force. FD FT Fg

N1T.8 How should we label the upward force? A. FM(force of motion) B. FI(force of inertia) C.FD (D=drag) D. The diagram is wrong: the upward force should not be there. E. The diagram is wrong: there should be a downward force instead of a rightward force. FD FT Fg