Velocity (converted to ft/ sec) (sec) (30 mi /h = 44 ft/ sec) (sec) (30 mi /h = 44 ft/ sec) Velocity (converted to ft/sec) Time Time 70 15 10 44 80 22 20 15 90 35 30 35 100 44 40 30 110 30 50 44 120 35 60 35
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.
You and a companion are about to drive a
twisty stretch of dirt road in a car whose speedometer works but
whose odometer (mileage counter) is broken. To find out how
long this particular stretch of road is, you record the car’s velocity
at 10-sec intervals, with the results shown in the accompanying
table. Estimate the length of the road using
a. left-endpoint values.
b. right-endpoint values.
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