Question

An object start from rest and travels with an acceleration of 5m/s². what will be the velocity after 3 second?

Answer 1

Given Parameters

➡ Initial velocity (u) = 0

➡ Acceleration (a) = 5m/s²

➡ Time (t) = 3 seconds

To Find:

The final velocity after 3 seconds.

Solution:

Here, we need to apply the acceleration formula, which is (v-u)/t.

$\sf{\longrightarrow\:\dfrac{v-u}{t}=a}$

Substituting the known values into the equation, we get:

$\sf{\longrightarrow\:\dfrac{v-0}{3}=5}$

$\sf{\longrightarrow\:v=5\times3}}$

$\sf{\longrightarrow\:v=15m/s}$

The final velocity is 15 m/s.

Knowledge Bytes:

Distance: The total path length covered by an object is known as distance.

Speed: The rate of change of the position of an object in any particular direction is termed as speed.

Velocity: Speed with direction is called velocity.

Acceleration: The rate of change of velocity with respect to time is termed as acceleration.