An object of mass m is pressed against (but is not attached to) an ideal spring

Question

An object of mass m is pressed against (but is not attached to) an ideal spring of spring-constant k and negligible mass, compressing it by a distance x. After it is released, the box slides up a friction less incline and eventually stops. If we repeat this experiment using instead a spring with spring-constant moves free of the spring, the speed of the box will be times as great as before. 'B. just as it moves free of the spring, the kinetic energy of the box will be twice as great as before. the box will go up the incline twice as high as before. All of the above A 10-ton space station collides with a 100-lb satellite. The collision will obviously cause far more damage to the satellite than the space station. During the collision: the force on the space station due to the collision is slightly greater than the force on the satellite. the satellite and the space station have the same magnitude acceleration. the force on the satellite due to the collision is mu Ch greater than the force on the space station. force of on the space station due to the collision is exactly equal to the force on the satellite. A 1.0-kg block and a 2.0-kg block are pressed together on a horizontal friction less surface with a compressed ideal spring between them, but they are not attached to the spring. After they are released and have both moved free of the spring: both blocks will both have the same amount of kinetic energy. lighter block will have more kinetic energy than the heavier block. the heavier block will have more kinetic energy than the lighter block. both blocks will have equal speeds. the magnitude of the momentum of the heavier block will be greater than the magnitude of the momentum of the lighter block. A 4.0-kg bowling ball is moving with speed 2.0 m/s. A 1.0-kg bowling ball is moving with speed 4.0 m/s. Both bowling balls roll onto a carpeted floor, which means they feel the same constant braking force due to friction, and both bowling balls are brought to rest. Which bowling ball travels the greater distance before stopping?

Explanation / Answer

The answers for the above questions are

4) D)ALL OF THE ABOVE

REASON : using energy conservation equations

1/2mv^2 = 1/2 kx^2 and 1/2 kx^2 = mgh

5) option D)

Reason : for every action there is an equal and opposite reaction

6) option B) by the formula kinetic energy = 1/2mv^2

7) option A) reason : breaking force* distance =kinetic energy

8)B ) false

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