7. At an airport, luggage is unloaded from a plane into the three cars of a luggage carrier, as the drawing shows. The acceleration of the carrier is 0.184 m/s^2 and friction is negligible. The coupling bars have negligible mass. If 30.5 kg of luggage were removed from car 2 and placed in car 1, by how much would the tension change in coupling bars (a) A, (b) B, and (c) C? If instead 30.5 kg of luggage were removed from car 2 and placed in car 3, by how much would the tension change in coupling bars (d) A. (e) B, and (f) C? In each case, give your answer as a positive number if the tension increases, and a negative if it decreases.

Answers:

(a) Number:	Units:
(b) Number	Units:
(c) Number	Units:
(d) Number	Units:
(e) Number	Units:

19. An 81-kg baseball player slides to the right into second base. The coefficient of kinetic friction between the player and the ground is 0.49.

(a) Draw the free-body diagram showing the forces that act on the player.

(b) What is the magnitude of the frictional force? (c) If the player comes to rest after 1.6 s, what was his initial velocity?

Step 1 (a) Draw the free-body diagram showing the forces that act on the player. Use the checkboxes to select the correct vectors as instructed above. Move the vectors to the correct starting points and orient them in the correct direction as instructed.

Key to Force Labels mg = Gravitational force f = Frictional force Fn = Normal force T = Tension

• mg
• f
• Fn
• T

Draw free body diagram here:

Point the acceleration vector in the correct direction ? angle 25

added pictures with the questions below

7 Help Assess X Can 81 kg bas X C Two 5-N box x C | Chegg.com x Course Hero x MyLab and x Pea player/index.html?launchld=0191841f-4aae-422b-94db-e3d1986566e1#/question/18 nsurance Jobs Social Media Business Electronic Diversit... Banking QQCatalyst by Q... B Question 19 of 20 < > -/5 E An 81-kg baseball player slides to the right into second base. The coefficient of kinetic friction between the player and the ground is 0.49. (a) Draw the free-body diagram showing the forces that act on the player. (b) What is the magnitude of the frictional force? (c) If the player comes to rest after 1.6 s, what was his initial velocity? Step 1 (a) Draw the free-body diagram showing the forces that act on the player. Use the checkboxes to select the correct vectors as instructed above. Move the vectors to the correct starting points and orient them in the correct direction as instructed. mg f FN Key to Force Labels mg Gravitational force f=Frictional force FN Normal force T= Tension T Draw free-body diagram here Point the acceleration vector in the correct direction 25 tv AC