Question

a body moving on a straight line such that at t=0 ,u=5m/s and acceleration a= -1 m/s^2 find speed at t =10 secs ​

Answer 1

Explanation:

in the problem we are considering the magnitude of the velocity so that it can be taken as positive my friend

Answer 2

Concept:

The speed of an object, which is a scalar quantity, is the size of the change in its location over time or the size of the change in its position per unit of time.

The motion of an object with constant acceleration is described by a set of equations known as kinematic equations.

Given:

The initial velocity of the body is $5 \text{m/s}$.

The acceleration of the body is a = -1 m/s² .

Find:

The speed of the body at t = 10sec .

Solution:

The initial velocity of the body, $u=5m/s$.

The acceleration of the body, $a=-1m/s^2$

At $t=10sec$,

Using the kinematic equation,

$v=u+at\\v=5+(-1)10\\v=-5m/s$

The speed of the body at t = 10 sec is -5m/s².

#SPJ2