Question

A bas decreases its speeds from80
Km/her to 60 km/her en 5 sec
the acceleration of the bus.​

Answer 1

Answer:

Explanation:

The answer is given in the picture given below

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Answer 2

$\Huge\textsf{\underline{AnsWer:}}$

$\star$ $\large\sf \blue{Acceleration \: of \: bus \: is \: 1.1m/s^2}$

$\Huge\textsf{\underline{Explanation:}}$

♱$\normalsize\textsf{\underline{\underline \green{Given:-}}}$

$\star$ $\normalsize\sf{Initial \: velocity \: = \: 80km/hr}$

$\star$ $\normalsize\sf{Final \: velocity \: = \: 60km/hr}$

$\star$ $\normalsize\sf{Time \: taken \: = \: 5seconds}$

♱$\normalsize\textsf{\underline{\underline \green{To \: find:-}}}$

$\star$ $\normalsize\sf{Acceleration \: of \: bus}$

♱$\normalsize\textsf{\underline{\underline \green{Solution:-}}}$

${\boxed{\sf{Acceleration(a) \: = \: \frac{Initial_{velocity} - Final_{velocity} }{Time} }}}$

•$\normalsize\textsf{\underline{Point \: that \: should \: be \: noticed:}}$

$\star$ $\normalsize\sf{Velocities \: are \: in \: km/hr.}$

$\star$ $\normalsize\sf{Time \: is \: given \: in \: seconds}$

$\normalsize\sf{So, \: velocities \: should \: converted \: into \: m/s \: to \: get \: correct \: answer.}$

•$\normalsize\textsf{\underline{Initial \: velocity:}}$

➠ $\normalsize\sf{ Initial_{velocity} \: = \: 80 \times\ \frac{5}{18} }$

➠ $\normalsize\sf{ Initial_{velocity} \: = \: 22.2m/s \: (approx.)}$

•$\normalsize\textsf{\underline{Final \: velocity:}}$

➠ $\normalsize\sf{Final_{velocity} \: = \: 60 \times\ \frac{5}{18} }$

➠ $\normalsize\sf{ Final_{velocity} \: = \: 16.7 m/s \: (approx.)}$

•$\normalsize\textsf{\underline{Block \: the \: values \: in \: available \: data:-}}$

➠ $\normalsize\sf{ a \: = \: \frac{\: 22.2 \: - \: 16.7}{5}}$

➠ $\normalsize\sf{ a \: = \: \cancel{\frac{5.5}{5}} }$

➠ $\normalsize\sf{ a \: = \: 1.1m/s^2}$

➠${\boxed{\sf{ a \: = \: 1.1m/s^2}}}$