Answer:
Gravitational force between masses there is Gravitational force .
Healthy to get better at your daily activities but harmful to your body if you overdo it
If a pizza is round like a ball it will roll off a cliff.If it’s just flat and round it won’t.
The force of earth's gravitational field is always directed downwards (towards the center of the earth. When the ball is thrown up, it is going against the earth's gravitational field and so, the earth's gravitational force pulls it back down, accelerating it downwards.