And object has traveled 200 m in 20 seconds what is its average speed

How does convection affect our atmosphere? our layers of earth? our oceans?

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the