QUESTION: A BALL IS THROWN STRAIGHT WITH ENOUGH SPEED SO THAT IT IS IN THE AIR F
ID: 2218994 • Letter: Q
Question
QUESTION: A BALL IS THROWN STRAIGHT WITH ENOUGH SPEED SO THAT IT IS IN THE AIR FOR SEVERAL SECONDS... (ANSWER THE FOLLOWING QUESTIONS) 1) WHAT IS THE VELOCITY OF THE BALL WHEN IT REACHES ITS HIGHEST POINT? 2) WHAT IS ITS VELOCITY 1 s BEFORE IT REACHES ITS HIGHEST POINT? 3)WHAT IS THE CHANGE IN ITS VELOCITY DURING THE 1-s INTERVAL? 4)WHAT IS ITS CHANGE IN VELOCITY AFTER IT REACHES ITS HIGHEST POINT? 5)WHAT IS THE CHANGE IN VELOCITY DURING THIS 1-s INTERVAL? 6)WHAT IS THE CHANGE IN VELOCITY DURING THE 2-s INTERVAL FROM 1 s AFTER THE HIGHEST POINT(in velocity)? 7)WHAT IS THE ACCELERATION OF THE BALL DURING ANY OF THESE TIME INTERVALS AND AT THE MOMENT THE BALL HAS ZERO VELOCITY?Explanation / Answer
A ball is thrown with enough speed straight up so that it is in the air several seconds What is its velocity 2s before it reaches its highest point? Physics Questions Answers.com > Wiki Answers > Categories > Science > Physics Best Answer All the time the ball is in the air, its acceleration is 9.8 meters (32.2 feet) per second2 downward. In other words ... Every second it's in the air, its downward speed is that much faster than it was one second earlier. When it reaches its highest point, its speed will be zero. Two seconds earlier, its DOWNWARD speed was that much LESS than it is at the top. In other words ... Its UPWARD speed was that much MORE than it is now. So 2 seconds ago, its upward speed was (2 x 9.8) = 19.6 meters per second / (2 x 32.2) = 64.4 feet per second.