Question: (a) A horizontal force acts on an object on a frictionless horizontal surface. If the force is halved and the mass of the object is

(a) A horizontal force acts on an object on a frictionless horizontal surface. If the force is halved and the mass of the object is doubled, the acceleration will be (1) four times, (2) two times, (3) one-half, (4) one-fourth as great.
(b) If the acceleration of the object is 1.0 m/s2, and the force on it is doubled and its mass is halved, what is the new acceleration?

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