Question

Q 1. Find the speed in the following cases :
(a) Distance=70km,time =2hours.
(b) Distance=800km,time =16hours.
(c) Distance=4800meters,time =24seconds .
$please helpme$
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Answer 1

Answer:

#include<stdio.h>

void main()

{

int arr[5]={4,12,78,90,70};

int i=0;

for(i=0;i<=4;i++)

{

printf("\n %d",arr[i]);

}

return 0;

}

Answer 2

Step-by-step explanation:

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To find Speed when Distance and Time are given

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To find speed when distance and time are given in different units the following conversion are:

1 km = 1000 m

Or

1 m = 1/1000 km

1 hour = 60 minutes

Or

1 minute = 1/60 hrs

1 minute = 60 seconds

Or

1 second = 1/60 minutes

For Example:

1. The speed of train is 60 km/hr; find its speed in metres per second.

Solution:

According to the problem, we know the speed of the train is 60 km/hr.

Distance covered in metres;

1 km = 1000 m

Therefore, 60 km = 60 × 1000 m

60 km = 60000 m

Time taken in seconds;

1 hr = 60 minutes;

1 minutes = 60 seconds

Therefore, 1 hr = 60 × 60 sec

1 hr = 3600 sec

Speed = (Distance )/(Time )

= 60000/3600 metres per second

To find Speed when Distance and Time are given