A-LEVEL PHYSICS: 6.1.1: Circular Motion (SaveMyExams)

Question 1

Velocity & Acceleration are both…

Answer 1

Vector quantities

Question 2

an object in uniform Circular Motion has a Constant ___ ___, but has…

Answer 2

Linear Speed, constantly changing Velocity

Question 3

why does an object in uniform Circular Motion have constant linear Speed, but constantly changing Velocity?

Answer 3

because Velocity is a Vector quantity (direction & magnitude).
∴ since object around a circle constantly changes direction, it has a constantly changing Velocity

Question 4

since an object in uniform Circular Motion has constantly changing Velocity, it must be…

Answer 4

Accelerating

Question 5

since an object in uniform Circular Motion has constantly changing Velocity, it must be accelerating.
this Acceleration is called…

Answer 5

Centripetal Acceleration

Question 6

Centripetal Acceleration:

Answer 6

an object in uniform Circular Motion constantly changes direction, ∴ is constantly changing Velocity.
hence, it is accelerating. this acceleration is called Centripetal Acceleration.

it is perpendicular to the direction of the linear speed

Question 7

Centripetal Acceleration is ___ to the direction of the ___ ___.

Answer 7

Perpendicular, Linear Speed

Question 8

Centripetal means it acts…

Answer 8

towards the centre of the circular path

Question 9

Centripetal force & acceleration is ___ to the direction of travel

Answer 9

perpendicular

Question 10

the direction of velocity is at a ___ to the circle

Answer 10

tangent

Question 11

why are centripetal force & acceleration always in the same direction?

Answer 11

NII: F=ma