Amodel train engine was moving at a constant speed on a straight horizontal track. as the engine movedâ along, a marble was fired into the air by a spring in theâ engine's smokestack. theâ marble, which continued to move with the same forward speed as theâ engine, rejoined the engine 1 sec after it was fired. the measure of the angle theâ marble's path made with the horizontal was 57 degrees. use the information to find how high the marble went and how fast the engine was moving.

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show the wavelengths of a wave. show the crests of a wave.

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.