Question

U=2m/s a=4m/s2 t=3sec find the v=?

Answer 1

Explanation:

v-u/t = a

v - 2/3 = 4

v -2 = 3×4

v = 12 +2

v = 14 m/s

Answer 2

Answer:

The value of velocity, v = 14 m/s.

$\large\underline\mathrm\red{GIVEN :}$

•$\sf \: Initial \: velocity, \: u \: = \: 2 m/s$

•$\sf \: acceleration, \: a \: = \: 4 m/s^{2}$

•$\sf \: time, \: t \: = \: 3 \: sec$

$\large\underline\mathrm\red{TO \: FIND :}$

Velocity, v = ?

$\large\underline\mathrm\red{CONCEPTS \: USED :}$

First law of motion,

$\sf \boxed{v \: = \: u \: + \: at}$

$\large\underline\mathrm\red{SOLUTION :}$

Using first equation of motion,

$\huge v \: = \: u \: + \: at$

put the values in above formula,

v = 2 + (4)(3)

v = 2 + 12

$\therefore \boxed{v \: = \: 14 \: m/s}$

$\therefore$ The velocity is 14 m/s.

FIRST LAW OF MOTION :

$\red{\boxed{\bold{V \: = \: u \: + \: at}}}$

• The first law of motion states that an object will be at rest in straight line unless an any external force is acted on it.

• The first law of motion is used to find the velocity, speed,. times and acceleration.