12. 3/5 points Previous Answers SerCP11 6.P.071 My Notes Ask Your Teachen A bloc

Question

12. 3/5 points Previous Answers SerCP11 6.P.071 My Notes Ask Your Teachen A block with mass mi1 0.550 kg is released from rest on a frictionless track at a distance h1 2.55 m above the top of a table. It then collides elastically with an object having mass m2 = 1.10 kg that is initially at rest on the table, as shown in the figure below. 72 (a) Determine the velocities of the two objects just after the collision. (Assume the positive direction is to the right. Indicate the direction with the signs of your answers.) V1=-2.36 v2 = 472 m/s m/s (b) How high up the track does the 0.550-kg object travel back after the collision? (c) How far away from the bottom of the table does the 1.10-kg object land, given that the height of the table is h2 1.90 m? 1.83 Your response differs from the correct answer by more than 10%. Double check your calculations. m (d) How far away from the bottom of the table does the 0.550-kg object eventually land? 913 Your response differs from the correct answer by more than 10%. Double check your calculations. m

Explanation / Answer

C.

time taken to fall vertically 1.90 m

t = sqrt (2h/g)

t = sqrt (2*1.9/9.81)

t = 0.622 sec

S = V2*t = 4.72*0.622 = 2.93 m

D.

S1 = V1*t = 2.36*0.622 = 1.47 m

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