Question

car travels with a velocity of 2 metre per second and come to rest after 10 seconds calculate its acceleration.​

Answer 1

Answer:

• -0.2 m/s² is the required answer .

Explanation:

Given:-

• Initial velocity ,u = 2m/s
• Final velocity ,v = 0m/s
• Time taken ,t = 10 s

To Find:-

• Acceleration ,a ?

Solution:-

As we have to calculate the acceleration of the car .

Acceleration is defined as the rate of change of velocity at per unit time.

✪ 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

⇛ a = 0-2/10

⇛ a = -2/10

⇛ a = -0.2m/s²

• Hence, the acceleration of the car is -0.2 m/s².

Answer 2

Answer:

Given :-

car travels with a velocity of 2 metre per second and come to rest after 10 seconds

To Find :-

Acceleration

Solution :-

At first

we know that

v = u + at

0 = 2 + a(10)

0 = 2 + 10a

0 - 2 = 10a

-2 = 10a

-2/10 = a

-0.2 = a

Acceleration = 0.2 m/s²