Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt.

Answer. when centripetal acceleration occurs an object changes its direction..

Motion with Constant Velocity: When an object is moving with constant velocity, it does not change direction nor speed and therefore is represented as a straight line when graphed as distance over time. You can also obtain an object’s velocity if you know its trace over time.

An object is in motion if it changes position relative to a reference point. A reference point is a place or object used for comparison to determine if something is in motion.

If you know the distance an object travels in a certain amount of time, you can calculate the speed of the object. The speed of an object is the distance the object travels in one unit of time.

Motion is a phenomenon that is very common in our daily life. For example, the car in which you travel moves, the air we breathe is in motion, the blood in our veins is in motion, the earth is in motion, the universe is moving and many more.

First, gravity is the force that pulls us to the surface of the Earth, keeps the planets in orbit around the Sun and causes the formation of planets, stars and galaxies.

Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.

Well, there is one on the Faroe Islands, where the water seems to move upward, i.e., defying the law of gravity. In fact, the waterfall, rather than defying gravity as the name suggests, goes upside down when strong gusts of wind blows against the flow of the waterfall.

In the case of gravity, mediated by spin 2 particles, charge is mass, which is always positive. Thus, q1q2 is always greater than zero, and gravity is always attractive. For spin 0 force mediators, however, there is no restriction on the charges and you can very well have repulsive forces.