Tracy (of mass 53 kg) and Tom (of mass 77 kg) are standing atrest in the center

Question

Tracy (of mass 53 kg) and Tom (of mass 77 kg) are standing atrest in the center of the roller rink, facing each other, free tomove. Tracy pushes off Tom with her hands, and remains in contactwith Tom's hands, applying a constant force for 0.7s. Tracy moves0.45m during this time. When she stops pushing off Tom, she movesat a constant speed.    a) What is Tracy's constant accelerationduring her time of contact with Tom?    b) What is Tracy's final speed after thiscontact?    c) What is correct about Tom's motion?       1. The force acting on Tomis greater than the force acting on Tracy.       2. Tom's acceleration issmaller.       3. Tom's acceleration isgreater.       4. Toms final velocity isgreater than Tracy's. Tracy (of mass 53 kg) and Tom (of mass 77 kg) are standing atrest in the center of the roller rink, facing each other, free tomove. Tracy pushes off Tom with her hands, and remains in contactwith Tom's hands, applying a constant force for 0.7s. Tracy moves0.45m during this time. When she stops pushing off Tom, she movesat a constant speed.    a) What is Tracy's constant accelerationduring her time of contact with Tom?    b) What is Tracy's final speed after thiscontact?    c) What is correct about Tom's motion?       1. The force acting on Tomis greater than the force acting on Tracy.       2. Tom's acceleration issmaller.       3. Tom's acceleration isgreater.       4. Toms final velocity isgreater than Tracy's.

Explanation / Answer

(c) Tom's acceleration is smaller

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