b/c fat floats. it makes it harder to float if there no fat. And it requires skill
This occurs due to the upthrust of water. Water exerts an upward force on the body. It is also called buoyancy.
Because of gravity. Gravity is a force that pulls everything towards the center of the Earth. This force keeps people on the ground even though the Earth is round. Hope this helps!
The action is the Earth's gravity pulling down on the book. The reaction is the book exerting an equal and opposite force upwards on the Earth, though it is so small that it is essentially negligible.
The force of gravity acting on an object is directly proportional to its mass. This means that the greater the mass of an object, the greater the force of gravity pulling it towards the Earth. This relationship is described by Newton's law of universal gravitation.
because they have just exercised.
The energy of their rotation round their orbits acts against the central force of gravity, in the same way as a ball on a string can be whirled round even though the tension in the string is pulling the ball towards the centre all the time.
The second fastest swimming stroke is Butterfly.
Air resistance slows you down which is why ski racers wear tight suits to minimize air resistance.
This is a really good question! Helium balloons 'fall' up because helium is lighter than air. In other words, even though gravity is pulling the balloon down, the helium is so light the balloon rises.
The force of gravity is acting against the downward movement of water through the ground. This force is responsible for pulling the water downwards towards the Earth's center.
Gravity acts as though you were being pulled to the center (of the earth, in my case).
Gravity works equally on every particle in a "standard" object which is why all objects fall at the same rate. Yes, you can exert an upward force greater than 1G when jumping, but even during the jump, gravity is already working on decelerating your upward speed and pulling you back down.