For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account. 2. Inertia - A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. 3. Potential Energy - Is the energy stored in an object due to its position in a force field or in a system due to its configuration.
6. Traction- a action of pulling things over a surface. 7. Centrifugal Force- is a force that acts outward on a body moving around on center, arising from the body's inertia 8. Centripetal Force- a force that acts on a body moving in a circular path and is directed toward center around which the body is moving.
2. "F = ma: the net force on an object is equal to the mass of the object multiplied by its acceleration." 3. "To every action there is an equal and opposite reaction." To prove the 1st law, you can see that the air released from the balloon disturbs the state of rest of the car and makes it move.
At the crest (antinode), constructive interference takes place. 82. ANS: Sound is produced by the vibration of an object. The vibrating object collides with nearby molecules transferring energy to them. These molecules collide with other molecules transferring the sound through the medium.
In space, masses that place pressure on different parts of the universe could combine and eventually create a kind of tunnel (the throat). This tunnel would join two separate times/places (the mouths) and allow travel between them at instantaneous speeds. B. The easiest way to think about it is if there is a piece of paper held tightly, and you put a ball
Galileo would say there is a friction force that brings the ball to rest. Newton will say same as Galileo. 3. Answer the following questions: 1. Explain mechanical equilibrium.
a. each object’s mass c. the distance between the objects b. each object’s volume d. both (a) and (c) 5. What happens to an object’s motion in each of the following cases? a. an unbalanced force acts on it b. two unequal forces act on it in opposite directions c. two equal forces act on it in opposite directions 6. What information is needed to calculate an object’s weight? 7.
Forces Test Review 1. Inertia can be best described as the (A) force that keeps an object in motion with constant velocity (B) force that keeps an object at rest (C) force that overcomes friction (D) property responsible for an object's resistance to changes in motion (E) property responsible for slowing down an object 2. A box is given a sudden push up a ramp. Friction between the box and the ramp is not negligible. Which of the following diagrams best represents the directions of the actual forces acting on the box as it moves upward after the push?
These are pictures of molecules frozen at two different times. Draw arrows to show the direction each particle might travel due to diffusion in diagrams A and B. A. B. Random arrows Random arrows 1b.
The kinetic energy of an object is determined by the mass and velocity at which the object is moving. When a coaster cart is dispensing down the first hill not all the potential energy is converted into kinetic energy, some is lost in other conversion processes. For example the friction given up by the moving parts of the cart give off heat. PE is also converted into some sound energy with the contact of the cart and the track in the process of reaching the top of the hill. The cart causes the supporting structure to flex, bend and vibrate and producing kinetic energy but not on the cart but on the track.