Car A (mass = 1000 kg) was subjected to a horizontal force of 10,000 N to allow it to move along horizontal a surface wherein friction force involved is 3000 N. Car B ( mass = 1200 kg) was subjected to a horizontal force of 7,000 N to allow it to move along a horizontal surface wherein friction force involved is 2000 N. Compare A and B's acceleration. * O Car A's acceleration is 1.2 times greater than B Car B's acceleration is % that of A Car B's acceleration is double that of A O Car A's acceleration is 1.7 times greater than B

Car A (mass = 1000 kg) was subjected to a horizontal force of 10,000 N to allow it to move along horizontal a surface wherein friction force involved is 3000 N. Car B ( mass = 1200 kg) was subjected to a horizontal force of 7,000 N to allow it to move along a horizontal surface wherein friction force involved is 2000 N. Compare A and B's acceleration. * O Car A's acceleration is 1.2 times greater than B Car B's acceleration is % that of A Car B's acceleration is double that of A O Car A's acceleration is 1.7 times greater than B

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Description: 1000kg Car A (mass = 1000 kg) was subjected to a horizontal force of 10,000 N to allow it to move alonghorizontal a surface wherein friction force involved is 3000 N. Car B ( mass = 1200 kg) wassubjected to a horizontal force of 7,000 N to allow it t

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 32P: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a...

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Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second exerts a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (See the free-body diagram.) (b) Calculate the acceleration. (c) What would the acceleration be if friction were 15.0 N?
A boat with initial speed υ0 is launched on a lake. The boat is slowed by the water by a force F = −αeβυ. (a) Find an expression for the speed υ(t). (b) Find the time and (c) distance for the boat to stop.
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A person holds a ball in her hand. (a) Identify all the external forces acting on the ball and the Newtons third-law reaction force to each one. (b) If the ball is dropped, what force is exerted on it while it is falling? Identify the reaction force in this case. (Ignore air resistance.)
The driver of a speeding empty truck slams on the brakes and skids to a stop through a distance d. On a second trial, the truck carries a load that doubles its mass. What will now be the trucks skidding distance? (a) 4d (b) 2d (c) 2d (d) d (e) d/2
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Give reasons for the answers to each of the following questions: (a) Clan a normal force be horizontal? (b) Can a normal force be directed vertically downward? (c) Consider a tennis ball in contact with a stationary floor and with nothing else. Can the normal force be different in magnitude from the gravitational force exerted on the ball? (d) Can the force exerted by the floor on the hall be different in magnitude from the force the ball exerts on the floor?
For all three situations, find the magnitude and direction of the tension force(s) exerted on Rochelle. If not enough information is given, say so. Explain your answers. a. Rochelle and Buddy pull on opposite ends of rope. The tension force exerted on Buddy is 15 N and is directed toward Rochelle. b. Now, one end of the rope is tied to a sturdy pole and Rochelle pulls on the other end. The tension force on the pole is 15 N directed toward Rochelle. c. Finally, Rochelle holds one rope in her left hand, and the other end of that rope is pulled by Joe. She holds another rope in her right hand, and the other end of that rope is pulled by Buddy. Both Buddy and Joe experience a 15-N force directed toward Rochelle.