Question

an object moving with the speed of 40 km/ h it stop after 30 minutes. find the acceleration of object​

Answer 1

acclertion is 20 Km hai ok

Answer 2

Explanation:

Given:-

Initial velocity ,u = 40km/h

Final velocity ,v = 0km/h

Time taken ,t = 30min = 1/2 hour

To Find:-

Acceleration ,a

Solution:-

According to the Question

As we know that acceleration is defined as the rate of change in velocity .

a = v-u/t

where,

v is the final velocity

a is the acceleration

u is the initial velocity

t is the time taken

Substitute the value we get

:\implies:⟹ a = 0-40/1/2

:\implies:⟹ a = -40×2/1

:\implies:⟹ a = -80/1

:\implies:⟹ a = -80km/h²

Here, negative sign show retardation

Hence the acceleration of the object is 80km/h²