Question

Multiple Choice Questions (MCQs)
41
11. A bus increases its speed from 36 km/h to 72 km/h in 10 seconds. Its acceleration is :
(a) 5 m/s2
(b) 2 m/s2
(c) 3.6 m/s2
(d) 1 m/s2
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Answer 1

Answer:

Option-d-1m/s^2

Explanation:

$u = 36 \frac{km}{h} = 36 \times \frac{5}{18} \frac{m}{s} = 10 \frac{m}{s} \\ v = 72 \frac{km}{h} = 72 \times \frac{5}{18} \frac{m}{s} = 20 \frac{m}{s} \\ a = \frac{v - u}{t} = \frac{20 - 10}{10} = \frac{10}{10} = 1 \frac{m}{ {s}^{2} }$

Answer 2

Answer:

option c is correct

Explanation:

from ist equation of motion .which is v=u+at .we get value of acceleration