-A block of mass m = 7.6 kg,moving on a frictionless surface with a speed v_i = 7.6 m/s,makes a perfectly elastic collision with a block of mass M at rest.After the collision,the 7.6 kg block recoils with a speed of v_f = 2.5 m/s.In the figure,the blocks are in contact for 0.20 s.The average force on the 7.6 kg block,while the two blocks are in contact,is closest to:

Question

-A block of mass m = 7.6 kg,moving on a frictionless surface with a speed v<sub>i</sub> = 7.6 m/s,makes a perfectly elastic collision with a block of mass M at rest.After the collision,the 7.6 kg block recoils with a speed of v<sub>f</sub> = 2.5 m/s.In the figure,the blocks are in contact for 0.20 s.The average force on the 7.6 kg block,while the two blocks are in contact,is closest to: A) 384 N B) 336 N C) 289 N D) 241 N E) 194 N

Quizplus · Accepted Answer

The Answer is A

-A Block of Mass M = 7