2s
the object's displacement.
A line intersect is a point on a line where another line or object crosses the line.
This will be true if the object moves with the same speed (a uniform speed) throughout all the time it is moving.If the object is a bus or train making stops along the way, total distance divided by the total time from a given point to another point is the average speed of the object for that interval.
Gravitational energy is the potential energy associated with gravitational force. If an object falls from one point to another point inside a gravitational field, the force of gravity will do positive work on the object, and the gravitational potential energy will decrease by the same amount.
The 1 way you can tell an object is in motion is by having a focus point that does not move and watch and see if the object you are looking for is moving. Another way to notice where the object is now, then later, check and see if the object has been moving. lastly, if you are a scientist, you can use telescopes, computers, and the latest gadgets to tell you if an object is in motion.
Kinetic energy is dependent on which point you are talking about. When it is about to be dropped, kinetic energy is zero. When it reaches almost hits the ground, there is maximum kinetic energy.
Yes, that is one meaning of "reference point", although the reference point need not be an object, but may simply be a location.
A big object because it has more mass which means more gravity pulling it towards the ground.
The change in position of an object compared to a reference point(another object) is called motion.
This is called a reference point.
reference point
Reference point
Reference point
the object's displacement.
The point of which one objects hits or collides with another object. (The point of impact).
They would both hit at the exact same time; if you let them go at the exact same time.
A shadow is an absence of light from a point-source because it has been blocked by an object. The object's shape is projected on to the ground, wall or other surface. There might be light from another source illuminating the part that is shadowed, and that might be coloured.