A police car is moving east towards an intersection at 25 miles per hour, and the police inside the car is using radar to determine the rate at which the distance is changing between them and another vehicle that is traveling south. When the police car is 12 miles west of the intersection and the other vehicle is 5 miles north of the intersection, it is determined that the distance between them and the other vehicle is decreasing at a rate of 35 miles per hour. Find the speed of the car when the car is 5 miles north of the intersection.
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.
Related Rates:
A police car is moving east towards an intersection at 25 miles per hour, and the police
inside the car is using radar to determine the rate at which the distance is changing between
them and another vehicle that is traveling south. When the police car is 12 miles west of
the intersection and the other vehicle is 5 miles north of the intersection, it is determined
that the distance between them and the other vehicle is decreasing at a rate of 35 miles per
hour. Find the speed of the car when the car is 5 miles north of the intersection.
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