Question

4.
2. A train moving with uniform speed covers a distance
of 120 m in 2 s. Calculate (i) the speed of the train
(ii) the time it will take to cover 240 m.​

Answer 1

Answer:

(i) 60 m/s (ii) 4 s

Explanation:

(i) Speed = Distance/ Time

Distance = 120 m

Time = 2 s

Speed = 120/2

= 60 m/s

(ii) Speed = Distance / Time

Therefore,

Time = Distance/ Speed

Distance = 240 m

Speed = 60 m/s ( Speed uniform)

Time = 240/60

= 4 s.

Answer 2

Given :-

• Distance travelled by the train ➜ 120 m
• Time taken ➜ 2 s

To find :-

• speed of the train
• the time it will take to cover 240 m.

Solution :-

i) speed of the train

we know

$\bf{Speed\:of\:the\:train= \frac{distance \: travelled}{time \: taken}}$

$\bf{ \implies \frac{120m}{2s}} = 60m \: s {}^{ - 1}$

ii) Time taken by the train to cover 240 m

we know,

$\sf{time \: taken = \frac{distance}{speed} }$

$\sf{ \implies \: \frac{240m}{60m \: s {}^{ - 1} } } = 4s$

Therefore,

$\sf \red{ speed \:of\: the \:train \:is \:60 m s {}^{ - 1} }$

And

$\sf\red{time \: taken \: by \: the \: train \: to \: cover \: 240 \: m \: is \: 4s}$

Hope it helps uh ❤