Because the basketball and marble have a force so that the basketball and marble can fall easily if you placed it from a tall building
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Yes! when you fall that two object. they will fall in the same time. its because gravity acts on all object on the earth's surface and causes them to accelerate when released. this acceleration known as the acceleration due to gravity is the same for all object on earth and is equal to 9.8 m/s² . this means that when object fall. the velocities increase by 9.8 m/s² every second. all the object had thier gravity and when you fall it in the same time they allowed to fall identical acceleration.
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