Answer:
It takes millions sometimes hundreds of millions Explanation:
The sun is the primary source of light. Other artificial sources are light bulb, torch light and some others. Thats all i can think of.
The medicine ball wall hit the ground faster, if that makes sense to you
Answer:
b) The gravitational pull will be weak.
Explanation:
Less mass requires less force. Gravity or gravitational pull is a force. In order for you to stay in place and not go through the ground, however, you require something to pulling you away from the Earth. That's why we have air resistance.
True because the speed of a mass can change it's gravitational potential energy in the gravitational field of another massive object.
