A ball is thrown straight down from the top of a 220-ft building with an initial velocity of -16 ft per second. The position function is s(t) = - 161+vgt+sq. What is the velocity of the ball after 4 seconds? O The velocity after 4 seconds is -80 ft per second. O The velocity after 4 seconds is –112 ft per second. O The velocity after 4 seconds is –144 ft per second. O The velocity after 4 seconds is -48 ft per second. O The velocity after 4 seconds is –288 ft per second.
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.
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