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Ch8-3.  A spring-loaded dart gun shoots a dart straight up into the air, and the dart reaches a maximum height of 24 m.  The same dart is shot straight up a second time from the same gun, but this time the spring is compressed only half as far before firing.  How far up does the dart go this time, neglecting friction and assuming an ideal spring?

A: 48m  B: 24m   C: 12m  

D: 6m  E: 3m

A spring-loaded dart gun shoots a dart straight up into the air, and the dart reaches a maximum height of 24 m.  The same gun is reloaded with the spring compressed the same amount, but now the gun is aimed at an angle of 45o to the horizontal.  Will the dart reach the same maximum height of 24m? Assume no frictional losses.

A: Yes, the dart will reach the same height

B: No, the dart will not reach the same height. 

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