Question

a body starts from 20 metre per second if its acceleration is 2 metre per second square then velocity of the body after 10 second

Answer 1

Explanation:

a=v-u/t

2=v-20/10v=o

Answer 2

Answer:

Given : The initial velocity of body(u) = 20 m/sec

            The Acceleration produced(a) = 2 m/(sec)²

            Time Period(t) = 10 seconds

To Find : The velocity of the body after the given time period.

Now, before heading towards questions, let us gain some prior knowledge which is essential to understand how we will calculate the answer.

In Kinematics, which is a branch of Physics, there are three main equations for motion. They are given by :

1. v = u+at
2. s = ut + (1/2)(at²)
3. v² = u² + 2as

where, v = final velocity possessed by any body

            u = initial velocity of the same body

            s = displacement of the same body

            a = acceleration produced by the same body

            t = total time taken

Now, we can proceed further towards the questions.

According to the question, we are given the values of u, a and t and have to find value of v.

We have first equation of motion in which all the corresponding quantities are given. Hence, we would be applying that formula only.

Therefore,

v = u + at

v = 20 + (2×10)

v = 20+20

v = 40 m/sec

Hence, the final velocity of the body will be 40 m/sec.