Question

...........................​

Answer 1

To Find:

The average speed....

Given:

• Distance = 300km
• time = $t_{1}$ = 6hrs
• time = $t_{2}$ = 4hrs

Formula used:

$Average\:speed = \dfrac{s_{1} + s_{2}}{t_{1} + t_{2}}$

Concept:

Here ,in this case the distance will be same...

Solution:

$Average\:speed = \dfrac{300 + 300}{6 + 4}$

$Average\:speed = \dfrac{600}{10}$

$Average\:speed = 60km\:hr^{-1}$

${\boxed{Average\:speed = 60km\:hr^{-1}}}$

Extra Information:

Some important Formulae of motion:

• $v = u + at$
• $v^{2} = u^{2} + as$
• $s = ut + \dfrac{1}{2}at^{2}$
• $s_{n} = u + \dfrac{1}{2}a[2n - 1]$

Answer 2

Answer:

avg s=total distance traveled /total time taken

avg s=300+300/6+4

=600/10

=60km/h

Explanation:

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