The force that keeps an object moving or keeps an event developing after it has started. Her body continued its momentum down the hill and she fell The campaign has been gaining --------------- ever since the television appeal. can be thought of as the "power" when a body is moving, meaning how much force it can have on another body. Once you push it, it keeps going under its own ................. The spacecraft will fly around the earth to gain/gather ................ for its trip to Jupiter. We have to keep the ...... of our sales operation going. In an attempt to give new ................ to their plans, the committee set a date for starting detailed discussions.