Question

Velocity vof a body changes from 2m/s to 6m/s in 2s what is the acceleration

Answer 1

$2\: m {s}^{ - 2}$

Explanation:

$Given, \: \: \: u = 2 \: m {s}^{ - 1} , \: \: v = 6 \: m {s}^{ - 1} \\ and \: \: \: t = 2s \\ we \: \: know \: \: \boxed{v = u + at} \\ Now, \: \: \: putting \: \: values \\6 \: m {s}^{ - 1} = 2 \: m {s}^{ - 1} + a \times 2s \\ 6 \: m {s}^{ - 1} - 2 \: m {s}^{ - 1} = a \times 2s \\ 4 \: m {s}^{ - 1} = a \times 2s \\ \frac{4}{2} \: m {s}^{ - 2} = a \\ 2 \: m {s}^{ - 2} = a \\ \boxed{a = 2 \: m {s}^{ - 2} }$