no
Gravity and Air resistance!! x
You could put them in like a rat ball, but make sure they do not roll down the stairs!
no
You should never put a guinea pig inside of a ball as their spines are not made to bend in that manner. Serious injury or death could occur from placing a guinea pig within a roll-about ball.
A sphere rolls because a sphere is like a ball and a ball would roll. Remember round stuff always roll
The force that makes a ball roll is the force of friction between the ball and the surface it is rolling on. As the ball moves, friction between the ball and the ground pushes the ball forward, causing it to roll. Additionally, any initial force applied to the ball (like giving it a push) can also contribute to its rolling motion.
A ball with less friction, such as a smooth, hard ball like a metal ball or a marble, will typically roll the farthest down a ramp compared to a ball with more friction, such as a rubber ball or a soft foam ball.
they roll up in a ball to look like rocks
You can throw it, roll it, kick it and headbut it. You could also squeeze it.
A ball or globe.
Yes goalkeepers can roll the ball to a player.
If you roll a ball on a surface with very little friction, the ball will travel much further than if it were on a high-friction surface. The ball will roll smoothly with minimal resistance, conserving its initial momentum and velocity for longer distances.