A Heavy Dart and a Light Dart Are Launched Horizontally

question 50

Multiple Choice

A heavy dart and a light dart are launched horizontally on a frictionless table by identical ideal springs.Both springs were initially compressed by the same amount.Which of the following statements about these darts are correct? (There could be more than one correct choice. )

• A)The darts both have the same kinetic energy just as they move free of the spring.
• B)The lighter dart leaves the spring moving faster than the heavy dart.
• C)The heavy dart had more initial elastic potential energy than the light dart.
• D)Both darts move free of the spring with the same speed.
• E)Both darts had the same initial elastic potential energy.

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