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(B) The $Moon$ revolves around the $Earth$ due to the centripetal force provided by the gravitational pull of the $Earth$. If the gravitational force

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It will move in a straight line tangential to its orbit at that instant.

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(B) The $Moon$ revolves around the $Earth$ due to the centripetal force provided by the gravitational pull of the $Earth$. If the gravitational force of the $Earth$ suddenly becomes zero,the centripetal force will also become zero. According to $Newton's$ first law of motion,an object in motion will continue to move in a straight line unless acted upon by an external force. Therefore,the $Moon$ will begin to move in a straight line along the tangent to its circular orbit at the instant the gravity becomes zero.

Suppose the gravity of the $Earth$ suddenly becomes zero,then in which direction will the $Moon$ begin to move if no other celestial body affects it?

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