7. Why does a curve on a distance-time graph indicate acceleration?
an increasing amount of time passes for each unit of distance
a decreasing amount of time indicates a decreasing number of distance units
a decreasing distance is traveled during each unit of time
an increasing distance is traveled during each unit of time

A curve on a distance-time graph indicate acceleration "an increasing distance is traveled during each unit of time".

Option: D

Explanation:

A distance-time curve represents the distance covered when an entity travels along a straight line. Here the line gradient is proportional to the object's velocity as bigger the gradient (and the steeper the line) quicker the object moves.

It must also be remembered that an entity traveling at a constant velocity while continually changing direction is also accelerating. Velocity, a quantity of vectors, varies when either the magnitude or the direction changes. As dealing with circular motion, this is essential.

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like . (i crazy)

most famous scientist who contributed to this physics are:

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes