Question

An object is starting from rest and moving with an acceleration of 3m/s2.

What will be its velocity after 15 seconds?​

Answer 1

Given:

• Initial velocity (u) = 0 m/s (∵ object is starting from rest)

• Acceleration (a) = 3 m/s²

• Time (t) = 15 s

To Find:

• The final velocity of an object.

Solution:

Applying 1st equation of motion,

v = u + at

[ Put the values ]

⇒ v = 0 + 3 × 15

⇒ v = 45 m/s

Hence:

The final velocity of an object is 45 m/s.

For infomation:

• 2nd eqn. of motion, ie,. s = ut + ¹/2 × at²

• 3rd eqn. of motion, ie,. v² = u² + 2as

• Work formula, ie,. w = F × s

• Mirror formula, ie,. 1/v - 1/u = 1/f

Answer 2

$\huge\mathcal\colorbox{orchid}{{\color{black}{★ANSWER★}}}$

$\huge\color{orchid}{\textbf{\textsf{GIVEN :-}}}$

• Initial velocity (u) = 0 m/s
• Acceleration (a) = 3 m/s²
• Time (t) = 15 seconds

$\huge\color{orchid}{\textbf{\textsf{TO FIND :-}}}$

• The final velocity of an object.

$\huge\color{orchid}{\textbf{\textsf{SOLUTION :-}}}$

Applying 1st equation of motion,

v = u + at

v = 0 + 3 × 15

v = 45 m/s

Hence, the final velocity of an object is 45 m/s.

Hope it Helps Buddy ❤️