B Nirmala Shastry Solutions for Exercise 4: SPEEDY TEST

Find the average speed of

(i) Distance$=2500 \mathrm{km}$ and Time$=20 \mathrm{hours}$

(ii) Distance$=600 \mathrm{km}$ and Time$=5 \mathrm{hours}$

A car travels $150 \mathrm{km}$ in $3$ hours, $200 \mathrm{km}$ in $5$ hours and $82 \mathrm{km}$ in $4$ hours. Find the average speed.
 

Express in $\mathrm{m}/\mathrm{s}$.
$18 \mathrm{km}/\mathrm{h}$
 

Express in $\mathrm{m}/\mathrm{s}$.
$36 \mathrm{km}/\mathrm{h}$
 

Express in $\mathrm{m}/\mathrm{s}$.
$198 \mathrm{km}/\mathrm{h}$
 

Express in $\mathrm{m}/\mathrm{s}$.
$324 \mathrm{km}/\mathrm{h}$
 

A child runs at a speed of $6 \mathrm{m}/\mathrm{s}$. How much distance will the child cover in $20$ seconds?
 

A car travels at a speed of $40 \mathrm{km}/\mathrm{h}$. How much distance will it cover in $8$ hours?