A student is conducting experiments with gliders on a horizontal, frictionless track. In trial 1 of an experiment, a glider moves with speed V, and collides elastically with another glider that is initially at
rest. In trial 2, the setup is identical except that the gliders stick together during the collision. How
does the speed of the two-glider system's center of mass change, if at all, during the collision in
each trial?
Trial 1
Trial 2
Does not change
Does not change
A B
Does not change
Decreases
C
Decreases
Does not change
D
Decreases
Decreases

tbh i dont know ether

2b2t

explanation:

2b2t

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.