Multiple Choice
An object attached to an ideal massless spring is pulled across a frictionless surface. If the spring constant is 45 N/m and the spring is stretched by 0.88 m when the object is accelerating at 
what is the mass of the object?
Definitions:
Related Questions
Q9: A 0.600-mm diameter wire stretches 0.500% of
Q17: A wooden block A of mass 4.0
Q19: A string, 0.28 m long and vibrating
Q22: Two objects of the same mass move
Q26: A traffic light weighing 100 N is
Q28: A 30.0-kg child sits on one end
Q29: If the fastest you can safely drive
Q31: Spaceman Speff orbits spherical asteroid X with
Q40: Consider the motion of a 1.00-kg particle
Q42: A child throws a ball with an