Question

If v = 40 , a = 4 , t = 6 and v = u + a t , evaluate u .

Answer 1

$\boxed{ \bf u \: = \: 16 m/s }$

Given

• v = 40 m/s

• a = 4 m/s²

• t = 6 s

• Evaluate u

Solution

$\boxed{ \bf\red{v = u + at }}$

Substituting the values,

• v = u + at

• $\longmapsto$40 = u + 4 × 6

• $\longmapsto$40 = u + 24

• $\longmapsto$u = 40 - 24

• $\longmapsto$u = 16 m/s

$\rule{10cm}{0.05cm}$