ll TFW 2:15 PM a session.masteringphysics.com C Exercise 8.57 MasteringPhysics 6

Question

ll TFW 2:15 PM a session.masteringphysics.com C Exercise 8.57 MasteringPhysics 6 of 13 Constants ames (mass 89.0 kg ) and Ramon (mass 61.0 kg ) are 20.0 m apart on a frozen pond. Midway between them is a mug of their favorite beverage. They pull on the ends of a light rope stretched between them. Ramon pulls on the rope to give himself a speed of 1.10 m/s. Part A What is James's speed? Express your answer with the appropriate units. 0.855 Submit Request Answer Incorrect; Try Again; 18 attempts remaining Next

Explanation / Answer

Given,

Masses, m1, m2 = 89 kg, 61 kg

since there is no external force

so momentum of their system will be conserved

89 *V = 61 * 1.10

V = (61 * 1.10)/ 89

V= 0.75 m/s

Part B)

Thrust, T = v x (dm/dt) = 1550 x 0.045 = 69.75 N

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