Which is the best example of newton's first law of motion? a small, lightweight ball and a large, heavy ball are dropped off the top of a very tall building. they both strike the ground at the same time. a basketball player shoots the ball from half court. it soars toward the basket until another player taps it making it go in a different direction. it takes you more effort to move a large box across the room than it does to move a small box across the room. you push your little sister on the swings at the park. you push harder and she ends up swinging higher.