Question

Spilt the following shapes into rectangles and find their areas. (The measures are given in centimetres.)​

Answer 1

Answer:

Hi,

Answer:

Given :-

Zara drives his car around a circular section of a road having a radius of 50 m at a constant speed of 20 m/s.

To Find :-

What is the centripetal acceleration of Zara's car.

Formula Used :-

${\red{\boxed{\large{\bold{a =\: \dfrac{{v}^{2}}{r}}}}}}$

where,

a = Centripetal acceleration

v = Velocity

r = Radius

Solution :-

Given :

Velocity = 20 m/s

Radius = 50 m

According to the question by using the formula we get,

⇒ $\sf a =\: \dfrac{{(20)}^{2}}{50}$

⇒ $\sf a =\: \dfrac{400}{50}$

⇒ $\sf a =\: \dfrac{40\cancel{0}}{5\cancel{0}}$

⇒ $\sf a =\: \dfrac{40}{5}$

⇒ $\sf a =\: \dfrac{\cancel{40}}{\cancel{5}}$

➠ $\sf\bold{\purple{a =\: 8\: m/{s}^{2}}}$

$\therefore$ The centripetal acceleration of Zara's car is 8 m/s² .