Question

the velocity of a body changes from 18m/s to 20 m/s in 2 secs. Its

acceleration is _____________.​

Answer 1

Answer:

See the image...

answer is 1 m/s square

Answer 2

Given :

• Initial velocity ( u ) = 18 m/s
• Final velocity ( v ) = 20 m/s
• Time taken ( t ) = 2 sec

To Find :

• Acceleration ( a )

Solution :

• Acceleration is defined as the rate of change of velocity with time

$\:\:\: \bullet \: \large {\sf{\underline{Formula\:used\::}}}$

$\:\:\:\: \large {\boxed{\sf{\pink{Acceleration\:=\: \dfrac{v\:-\:u}{t}}}}}$

$\:\:\: \implies \: \sf Acceleration\:=\: \dfrac{20\:-\:18}{2}$

$\:\:\: \implies \: \sf Acceleration\:=\: \cancel \dfrac{2}{2}$

$\:\:\: \implies \: \sf Acceleration\:=\:1\:m/{s}^{2}$

$\:\:\: \bigstar \: \large {\sf{\underline{Acceleration(a)\:=\:1\:m/{s}^{2}}}}$

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