A state patrol officer saw a car start from rest at a highway on-ramp. She radioed ahead to another officer 25 mi along the highway. When the car reached the location of the second officer 19 min later, it was clocked going 60 mi/hr. The driver of the car was given a ticket for exceeding the60 mi/hr speed limit. Why can the officer conclude that the driver exceeded the speed limit? How fast must the car have been traveling?
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 state patrol officer saw a car start from rest at a highway on-ramp. She radioed ahead to another officer 25 mi along the highway. When the car reached the location of the second officer 19 min later, it was clocked going 60 mi/hr. The driver of the car was given a ticket for exceeding the60 mi/hr speed limit. Why can the officer conclude that the driver exceeded the speed limit? How fast must the car have been traveling?
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