Question

01. Calculate the distance of the body when

(a) Car was travelling with a speed of 560m/s for 30min

(b) Train traveling with a speed of 60km/hour for a day ​

Answer 1

Required Answer :-

(a) Speed of the car = 560 m/s

Time = 30 min = 30 × 60 = 1800 s

Now using the relation between distance , time and speed ;

⇒ Distance = Speed × time

⇒ Distance = 560 m/s × 1800 sec

⇒ Distance = 1008000 m = 1008 km

Hence , The distance travelled by the car is 1008 km or 1008000 m.

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(b) Speed of the train = 60 km/hr

Time = 1 day = 24 hrs

Now Applying the relation between Speed , distance and time ;

⇒ Distance = 60 km/hr × 24 hrs

⇒ Distance = 1440 km

Hence , The distance travelled by the train is 1440 km.

Answer 2

$\large \sf\underline{ \underline{ \red{to \: know : }}}$

Speed is rate at which an object covees a distance.

So,

$\sf{speed = \frac{distance}{time} } \\ \\ \therefore \boxed{\sf{distance = speed \times time}}$

$\\ \\ \large \sf\underline{ \underline{ \red{solution : }}}$

$\\ \huge \boxed{ \sf{(a)}}$

Speed = 560m/sec

Time = 30min

• 1 min = 60sec

30min = (30×60) seconds

Time = 1800sec

Distance = (560 × 1800)m

$\therefore \: \rm{ \green{distance \: is \: 1008000m}}.$

$\\ \\ \huge \boxed{ \sf{(b)}}$

Speed = 60km/hr

Time = 1day = 24hrs

Distance = ( 60 × 24 )km

$\\ \therefore \rm{ \green{distance \: is \: 1440km \: or \: 1440000m.}}$

Note :-

• See the units properly.

In (a) , we had time in minutes , so we converted it to seconds.