Question

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Answer 1

Answer:

Ans 1 - circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation. The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. The equations of motion describe the movement of the center of mass of a body.

Examples:

1. Satellite  orbiting the earth
2. Ceiling fan blade rotating

Ans 2

Electrons are a type of subatomic particle with a negative charge. ... Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron.

Ans 3

v=u+at

s=ut+1/2at^2

v^2=u^2+2as

v=final velo.

u=unitial velo.

a=acceleration

s=dist.travelled

t=time taken