Question

A body moving initially at rest with acceleration 2 metre by second square find the velocity of body after 2 mine of travel

Answer 1

Answer :-

$\implies \boxed{ \sf{v = 240\: \frac{m}{s} }} \:$

To Find :-

→ Velocity after 2 minutes .

Explanation :-

Given that ;

• Initial velocity (u) = 0

• Required velocity (v) = ?

• acceleration (a) = 2 m/s²

• time (t) = 2 minutes = 120 second .

Here we use first equation of motion . i.e,

$\implies \sf{ \: v = u \: + a \: t \: }$

substitute the given values

$\implies \sf{v = 0 + 2 \times 120} \\ \\ \implies \boxed{ \sf{v = 240\: \frac{m}{s} }}$

Some formula :-

$(1) \sf{ s = ut + \frac{1}{2} a {t}^{2} } \\ \\ (2) \sf{ {v}^{2} = {u}^{2} + 2a \: s} \\ \\ (3) \sf{ instantenous \: velocity = \frac{dx}{dt} } \\ \\ (4) \sf{ instantenous \: acceleration} \\ \: \: \: \sf{= \frac{dv}{dt} \: or \: \frac{ {d}^{2}x }{d {t}^{2} } }$