When the force is applied in the same direction as of motion, the speed of the object _, and when the force is applied in the opposite direction as of motion, the speed of the object _.

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changes, remains same

decreases, increases

increases, decreases

remains the same, decreases

answer is B.

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Detailed Solution

When the force is applied in the same direction, the speed increases. This is because it always happens in the direction of the force. Since the body is already moving, applying force will increase the speed of the body in the same direction. When the force is applied in the opposite direction, the speed decreases. Because while applying the force in the opposite direction, we oppose the body's motion.

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