Question

the velocity of an object increases at a constant rate from 20 m/s to 50m/in 10s .. find acceleration

Answer 1

✬ Acceleration = 3 m/s² ✬

Explanation:

Given:

• Initial velocity (u) of object is 20 m/s.
• Final velocity (v) of object is 50 m/s.
• Time (t) taken by object is 10 seconds.

To Find:

• What is the acceleration (a) of the object ?

Formula to be used:

• Acceleration = ( Final velocity – Initial velocity/time )
• a = ( v – u/t )

Solution: Putting all the given values in formula

$\implies{\rm }$ a = ( v – u/t )

$\implies{\rm }$ a = ( 50 – 20/10 )

$\implies{\rm }$ a = 30/10

$\implies{\rm }$ a = 3 m/s².

Hence, the acceleration of the object is 3 m/s².

Answer 2

GIVEN:

• Initial Velocity (u) = 20 m/s
• Final Velocity (v) = 50 m/s
• Time taken (t) = 10 Seconds

TO FIND:

• What is the acceleration of the object ?

SOLUTION:

Let the acceleration of the object be 'a' m/s²

To find the acceleration of the object, we use the formula:-

$\large\bf{\star \: a = \dfrac{v-u}{t} \: \star}$

According to question:-

On putting the given values in the formula,we get

$\sf{\hookrightarrow a = \dfrac{50-20}{10}}$

$\sf{\hookrightarrow a = \cancel\dfrac{30}{10}}$

$\bf{\hookrightarrow \star \: a = 3 \: m/s^2 \: \star}$

❝ Hence, the acceleration of an object is 3 m/s² ❞

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✰ Extra Information ✰

➾ Velocity = Displacement/Time

➾ Speed = Distance/Time

➾ Distance = Speed $\times$ Time

➾ Time = Distance/Speed