Question: A force Fo is applied continuously to a box initially at rest on a horizontal surface. The box slides with negligible friction for equal

A force Fo is applied continuously to a box initially at rest on a horizontal surface. The box slides with negligible friction for equal

A force Fo is applied continuously to a box initially at rest on a horizontal surface. The box slides with negligible friction for equal distances d and d2, as shown. How does the kinetic energy gained by the block over distance interval d2, AK2, compare to the kinetic energy gained over distance interval d, AK, and why? (A) AK AK, because the velocity increases by the same amount over intervals d and d. (B) AK = AKI, because the applied force does the same work on the block over intervals di and d2. AK > AK, because the block is moving faster on average over interval d2. (D) AK > AK, because the rate of change of kinetic energy is greater over interval d. Fo -d- d

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