Earth, the Moon, the Sun, other planets.
Large mass
A glacier.
If you're moving toward a relatively large mass ... large enough so thatgravitational forces between you and any other mass are insignificant bycomparison ... then the forces of gravity increase your speed toward it.If you're moving away from a relatively large mass ... large enough so thatgravitational forces between you and any other mass are insignificant bycomparison ... then the forces of gravity decrease your speed away from it.
It is a glacier.
Any large mass of ice that moves slowly over ice is called a glacier.
Any amount of force, no matter how large or small, will increase or decrease the speed of any mass, no matter how large or small. But if you specify how much you want the object's speed changed and how quickly you want it done, then you have specified the acceleration you want. In that case, the larger the mass is, the more force it will take to accomplish that assignment.
A large mass of snow and ice
Any number that is very large, or very small (near zero). For example, the mass of the Sun in kilograms (large), the distance to the M31 galaxy in meters (large), or the mass of the electron in kilograms (small).
A glacier.
Large mass amounts.
A large mass or a large velocity or both.===============================Answer #2:A large product of (mass) x (speed).
Any unbalanced force will make any mass accelerate. Clearly, a small force on a big mass will result in a small acceleration, as F=ma The previous answer on gravitation was not very helpful