Question

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Answer 1

Question :

An object reaches to speed of 10 m/s starting from rest in 2 seconds find acceleration of object.

Given :

• Initial velocity, u = 0 m/s
• Final velocity, v = 10 m/s
• Time, t = 2 seconds

To find :

• Acceleration of object

According to the question,

➞ v = u + at

Where,

• v = Final velocity
• u = Initial velocity
• a = Acceleration
• t = Time

➞ Substituting the values,

➞ 10 = 0 + a × 2

➞ 10 - 0 = 2a

➞ 10 = 2a

➞ 10 ÷ 2 = a

➞ 5 = a

So,the acceleration of object is 5 m/s².

Answer 2

Answer:

Given :-

• An object reaches to speed of 10 m/s starting from rest in 2 seconds.

To Find :-

• What is the acceleration of an object.

Formula Used :-

By using the first equation of motion we know that,

$\boxed{\bold{\large{\mathtt{v\: =\: u\: +\: at}}}}$

where,

• v = final velocity
• u = initial velocity
• a = acceleration
• t = time period

Solution :-

Given :-

• v = 10 m/s
• u = 0 m/s
• t = 2 sec

According to the question by using the formula we get,

⇒ 10 = 0 + a(2)

⇒ 10 = 0 + 2a

⇒ 10 - 0 = 2a

⇒ 10 = 2a

⇒ - 2a = - 10

⇒ a = $\sf\dfrac{\cancel{- 10}}{\cancel{- 2}}$

➠ a = 5 m/s²

$\therefore$ The acceleration of an object is 5 m/s² .