The speed is the distance covered by an object at a particular time. The time it will take for the train to pass the jogger is 36 seconds.
<h3>What is speed?</h3>
The speed is the distance covered by an object at a particular time. Therefore, it is the ratio of distance and time.
The speed of the train and the man can be written as,
- Speed of the train = 45kmph = 45×(5/18) = 12.5mps
- Speed of the man = 9kmph = 9×(5/18) = 2.5mps
Now, the time it will take for the train to completely pass the man is,
Relative speed = Distance / Time
(12.5 - 2.5) = (240 + 120)/ Time
10 = 360/Time
Time = 360/10
Time = 36 seconds
Hence, the time it will take for the train to pass the jogger is 36 seconds.
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Answer:
1:2
Step-by-step explanation:
You do 4:2 then divide 2 on each side which is 1:2
Original Perimeter = 2.5 + 2.5 + 1.5 + 1.5 = 8
The longer dimension is 2.5 as 2.5 > 1.5To make 2.5 into 10, we must multiply by 4For the smaller length, we must also multiply by 41.5 x 4 = 6
New Perimeter = 10 + 10 + 6 + 6 = 32
Now find the difference between the old and the new perimeter32 - 8 = 24
<em>*No units were specified - if included, remember to put them in your answer.</em>
Answer:
I think the answer is -40
Step-by-step explanation:
- what I did was added the -20 +-20
If 3/5 has 3.8kg
1/2 has 3.3kg
You find a common denominator:
6/10 and 5/10
The diference is 1/10, for every 1/10 of the container, it goes up by .5kg
At 5/10, the mass inside equals= 2.5kg
Subtract from 3.3kg=
0.8kg is the answer
Hope you get it!
