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(hrwc10p77_6e) A target glider, whose mass m2 is 320 g, is at rest on an air tra

ID: 1483694 • Letter: #

Question

(hrwc10p77_6e) A target glider, whose mass m2 is 320 g, is at rest on an air track, a distance d = 53 cm from the end of the track. A projectile glider, whose mass m1 is 600 g, approaches the target glider with velocity v1i = -75 cm/s and collides elastically with it (see the figure). The target glider rebounds elastically from a short spring at the end of the track and meets the projectile glider for a second time. How far from the end of the track does this second collision occur ( cm)? 3.29×101 cm You are correct. Your receipt no. is 154-4741 Help: Receipt Previous Tries How long does the target glider take to reach the end of the track? 5.42×10-1 s You are correct. Your receipt no. is 154-4824 Help: Receipt Previous Tries How much more time elapses before the gliders collide again?

Explanation / Answer


Distance from end of the track, d = 53 cm
Second Collisoon Occurs at 32.9 cm from the end of the track.

Distance moved by target glider = 53 cm + 32.9 cm
Distance moved by target glider = 85.9 cm

time taken to reach glider to the end of the track = 0.542 s
Speed = Distance/ time
Speed = 53/0.542

Now Distance to travel = 32.9 cm

Time elapsed = 32.9/53/0.542
Time elapsed = 3.36 * 10^-1 s
Time elapses before the gliders collide again, = 3.36 * 10^-1 s