Question

Can anyone give me a quiz on Vigilance Awareness????​

Answer 1

Answer:

The Central Vigilance Commission, an apex integrity institution of the country, in its endeavor to promote transparency, accountability and integrity in public life, has been declaring the observance of Vigilance Awareness Week every year to encourage the fight against corruption.

Answer 2

Answer:

Magnitude of retardation of Car = 2 m/s²

Explanation:

Given

Initial velocity of Car, u = 72 km/h

Final velocity of Car, v = 0

Time taken for changing velocity, t = 10 s

To find

Magnitude of average retardation =?

Formula required

First equation of motion

        v = u + a t

[ Where v is final velocity, u is initial velocity, a is acceleration and t is time taken ]

Solution

Let us first convert initial velocity of Car from km/h to m/s unit

→ u = 72 km/h

→ u = 72 × ( 1000 m) / ( 3600 s )

→ u = 72 × ( 1000 / 3600 )   m/s

→ u = 72 × 5 / 18  m/s

→ u = 20 m/s

Now,

Let, acceleration of Car be a then,

Using first equation of motion

→ v = u + a t

→ 0 = 20 + a ( 10 )

→ 0 = 20 + 10 a

→ 10 a = - 20

→ a = -2 m/s²

Therefore,

Magnitude of retardation of the Car would be 2 m/s².