ï»¿ A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn ? from Physics Motion in A Plane Class 11 Manipur Board

### Book Store

Currently only available for.
CBSE Gujarat Board Haryana Board

### Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn ?

Speed of the cyclist, v = 27 km/h = 7.5 m/s

Radius of the circular turn,Â rÂ = 80 m

Centripetal acceleration is,

Â  Â  Â
The question can be illustrated in the figure as shown below:

Consider, the cyclist begins cycling from point P and moves toward point Q.Â

At point Q, he applies the breaks and decelerates the speed of the bicycle by 0.5 m/s2.Â

This acceleration is along the tangent at Q and opposite to the direction of motion of the cyclist.

The angle betweenÂ acÂ and aTÂ is 900. Therefore,Â the resultant accelerationÂ aÂ is given by,

118 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors.Â

814 Views

Give three examples of scalar quantities.

Mass, temperature and energy
769 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views