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Readers may send their questions/answers to 1 hr Birding fair concept proving successful for avian conservation What technique is used to measure the distance of a celestial object from Earth and also of its distance from other celestial objects? Professor of Physics, VIT University, Vellore, Tamil Nadu On the other hand, if the train decelerates during the flight, the ball will fall ahead of the thrower. However, if the train accelerates during the flight, the ball will fall behind the thrower. Bridge Im gonna take it all, I Im gonna be the last one standing Higher over all, I Im gonna be the last one landing Cause I, I, I believe it And I, I, I, I just want it all, I just want it. Therefore, in accordance with the law of inertia, it is logical to expect the vertically thrown ball return to thrower’s hands in a train moving with a constant velocity. Hence, the vertical force of gravity affects only the vertical motion of the ball. This would also mean that the ball does not experience any acceleration that could change its forward velocity. Here, it should be noted that the gravitational force only pulls the ball down, but not back or forth. So if the train moves with a constant velocity, the ball will exactly return to the thrower. The former remains constant during the ball’s flight. To paraphrase, owing to the inertia of motion, the horizontal component vector of the velocity of the ball is equal to the velocity of the train at the moment the ball leaves the thrower’s hand. This is an iron-clad evidence for the law of inertia as the horizontal motion of ball before, during and after the catch is the same. When a person throws a ball up in a moving vehicle, say, a train, the ball does come straight back to thrower as though the train were at rest. If we throw a ball up in a very fast-moving vehicle (like an aircraft or a train), why does it come straight back to our hands and not fall behind us?Īccording to Newton’s first law, every material object continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by an unbalanced (net) force impressed upon it.
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