Question

a bus starting from rest moves with a uniform acceleration of 0.1 metre second -2 for 2 minutes find the speed acquired distance travelled

Answer 1

Here is your answers -:




•Acceleration 'a' = 2m/s²

•Time 't' = 2 minutes = 120 seconds

The bus started from rest.

•So, initial velocity 'u' = 0




To find -

Final velocity 'v' = ?

Distance travelled 's' = ?

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$a \: = \: \frac{v - u}{t}$

$v \: = \: u + at$
$v \: = \: 0 + 2 \times 120$
$v = 240$

Thus, v = 240m/s

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$s \: = \: ut \: + \: \frac{1}{2} a {t}^{2}$
$s \: = \: 0 \times 120 \: + \frac{1}{2} \: \times 2 \times {120 }^{2} \\ s = {120}^{2} \\ s = 14400 \: metre$

Thus,.



s = 14400m or 14.4km




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Answer 2

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➧ u ➾ 0
➧ a ➾ 0.1 m/s²
➧ t ➾ 2 min = 120s

a❱    V ➾ u + at
      V ➾ 0.1 × 120
      V ➾ 12 ms-¹ ...✔

b❱   v² - u² ➾ 2as
  (12)² - (0)² ➾ 2 (0.1)s
          s ➾ 720 m ...✔

_________                 Thanks...✊