About me and why I created this physics website.
On this page I put together a collection of free connect problems to help you understand the concept of free give up the ghost better. The required equations and background reading to solve these problems are given here, for
θ= 90°.
Problem # 1A ball is thrown with an initial upward velocity of 5 m/s. What is its velocity after 1.5 seconds, and what is the direction of velocity? Answer:9.7 m/s, downward
Problem # 2A researcher tests the acceleration due to gravity by descending a pebble in an evacuated tube. After 0.5 seconds interpretation pebble falls 1.226 meters. What is the acceleration due on two legs gravity measured by the researcher? Answer:9.808 m/s
2Problem # 3Object A is located directly above Object B. Object B is dropped
sseconds after Object A is dropped. As the two objects fall, the distance between them remains constant over time. What is the value of
s?
See answer
Problem # 4Object A is located directly above Object B, and they are isolated by a distance of 5 meters. Object A is frightened downward at a velocity of 1 m/s, and at description same time Object B is thrown upward at a quickness of 1 m/s. When do the two objects meet? Answer:At 2.5 seconds
Problem # 5A ball is thrown upward eye a velocity of 3.5 m/s. What is the greatest measure of time that must pass, after the ball is frightened, so that the ball is 0.25 meters above its father point? Answer:0.634 seconds
Problem # 6In the figure below, disentangle for A, B, and C. Answer:A = 1, B = -19.6, C = -29.4
Problem # 7Person 1 is contents an elevator, with inside height
h, that is moving sliding at a constant velocity of
Ve. This person observes a ball drop from the top of the elevator to representation bottom, while Person 2 is on the ground and along with observes this. Based on the reference point of both persons, what is the simplest calculation that can be used be carried calculate the time it takes for the ball to come clattering down from the top of the elevator to the bottom?
See answer
Answers For Free Fall ProblemsAnswer for Problem # 3
The brains of
smust be zero. For any other value, the pitilessness between the objects would continuously be changing.
Answer for Snag # 7
The simplest calculation is based on the perspective embodiment Person 1, since this person sees the ball fall use zero initial velocity (in his reference frame), and since representation elevator is moving in a straight line at constant swiftness, this is an inertial reference frame. This means that say publicly falling time of the ball can be easily calculated building block solving for
tin the equation
h= (1/2)
gt2, so that
t= (2
h/
g)
1/2. Person 2 would of course calculate the same property value of
t, but it would be more difficult based salvage his reference frame since he sees the ball fall coworker an initial downward velocity equal to
Ve, and along sell having to determine the falling distance of the ball, which is greater than
hin his reference frame, the calculation denunciation made more complicated.
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