A jogger passed me as I was walking down the street yesterday. I wondered whether I could figure out how fast she was running, so I started paying attention to where the jogger was. When she passed a fire hydrant a short distance in front of me, I began to count seconds. It took me 7 seconds to get to the hydrant, but when I reached the hydrant I looked up to see that she was just passing a parking meter. I again counted seconds until I reached the parking meter, and it took me 10 seconds. When I reached the parking meter, she was passing a light pole. It took me 14 seconds to reach the light pole. I knew that I walked two paces in 1 second, and my pace was 1 yard long. Approximately how fast, in miles per hour, was the jogger moving? (Round your answer to the nearest tenth.)
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
A jogger passed me as I was walking down the street yesterday. I wondered whether I could figure out how fast she was running, so I started paying attention to where the jogger was. When she passed a fire hydrant a short distance in front of me, I began to count seconds. It took me 7 seconds to get to the hydrant, but when I reached the hydrant I looked up to see that she was just passing a parking meter. I again counted seconds until I reached the parking meter, and it took me 10 seconds. When I reached the parking meter, she was passing a light pole. It took me 14 seconds to reach the light pole. I knew that I walked two paces in 1 second, and my pace was 1 yard long. Approximately how fast, in miles per hour, was the jogger moving? (Round your answer to the nearest tenth.)
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