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Salsk061 [2.6K]
2 years ago
9

a bus travelling on a straight road at 25m/s accelerates uniformly at 5m/s squared for 2 seconds. find its speed in kilometres p

er hour
Physics
1 answer:
notka56 [123]2 years ago
5 0

Answer:

126 kmh⁻¹

Explanation:

We can simply solve this by applying motion equations

where  

v - final velocity

u - initial velocity

a-acceleration

t - time

v = u + at

  <em>= 25 + 5×2 = 35 ms⁻¹</em>

<em>   = (35/1000)×3600 = 126 kmh⁻¹</em>

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The diagram below shows the velocity vectors for two cars that are moving relative to each other.
scoundrel [369]

Answer:

The answer is "5 \ \frac{m}{s} \ west"

Explanation:

\to \vec{V_1} = (25 \frac{m}{s}) (\hat{-i})\\\\\to  \vec{V_2} = (20 \frac{m}{s}) (\hat{-i})\\\\

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