Multiple Choice
A box of mass m is pressed against (but is not attached to) an ideal spring of force constant k and negligible mass,compressing the spring a distance x.After it is released,the box slides up a frictionless incline as shown in the figure and eventually stops.If we repeat this experiment but instead compress the spring a distance of 2x 
A) the box will go up the incline twice as high as before.
B) just as it moves free of the spring, the box will be traveling twice as fast as before.
C) just as it moves free of the spring, the box will be traveling four times as fast as before.
D) just as it moves free of the spring, the box will have twice as much kinetic energy as before.
E) just before it is released, the box has twice as much elastic potential energy as before.
Correct Answer:
Verified
Correct Answer:
Verified
Q25: A ball drops some distance and gains
Q26: When an object is solely under the
Q26: A 7.0-kg rock is subject to a
Q30: Two objects,one of mass m and the
Q31: Swimmers at a water park have a
Q32: In the figure,two identical springs have unstretched
Q35: How long will it take a 7.08
Q36: An 8.0-g bullet is shot into a
Q39: The force on a 3.00-kg object as
Q42: It requires 49 J of work to