Question

A tortoise covers 100 metre in 20 minutes and then sleeps for 30 minutes then he covers 60 metre in 10 minutes calculate the average speed

Answer 1

ANSWER:

• The average speed of tortoise = 0.044 m/s.

GIVEN:

• A tortoise covers 100 metre in 20 min.

• Sleeps for 30 min.

• Then he covers 60 metre in 10 min.

TO FIND:

• The average speed of tortoise.

FORMULAE:

$\boxed{\boxed{\bold{\large{Avg \ speed=\dfrac{Total\ distance}{Total \ time}}}}}$

$\boxed{\boxed{\bold{\large{1 \ \: minute = 60 \ seconds}}}}$

EXPLANATION:

Total distance travelled = 100 + 0 + 60

Total distance travelled = 160 m

Total time taken = 20 + 30 + 10

Total time taken = 60 min.

1 minute = 60 s

60 min = 60 × 60 s

Total time taken = 3600 s.

$\bf{Avg \ speed=\dfrac{Total\ distance}{Total \ time}}$

Avg speed = 160 / 3600

Avg speed = 4 / 90

Avg speed = 2 / 45

Avg speed = 0.044 m/s

Hence the average speed of the tortoise = 0.044 m/s

Answer 2

Required answer:

ㅤ

Solving this question using Speed formula.

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Speed formula:

★ $\rm{Average \: speed = \dfrac{Total \: distance}{Total \: time}}$

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Remember:

• Distance travelled = $\rm{100 + 0 + 60 = 160 \: m.}$ㅤ

• Time taken = $\rm{60 \times 60 = 3600 \: min.}$

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Using the above formula and value, we get:

$\longrightarrow\rm{\dfrac{160}{3600}}$

ㅤ

$\longrightarrow\rm{0.044 \: m/s}$ ㅤ

Therefore, 0.044 m/s is average speed.