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Equations of Motion Video Lecture | Mechanics & General Properties of Matter - Physics

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FAQs on Equations of Motion Video Lecture - Mechanics & General Properties of Matter - Physics

1. What are the three equations of motion in physics?
Ans. The three equations of motion in physics are: 1. v = u + at: This equation relates the final velocity (v), initial velocity (u), acceleration (a), and time (t). 2. s = ut + 0.5at^2: This equation relates the displacement (s), initial velocity (u), time (t), and acceleration (a). 3. v^2 = u^2 + 2as: This equation relates the final velocity (v), initial velocity (u), displacement (s), and acceleration (a).
2. How are the equations of motion derived?
Ans. The equations of motion can be derived using calculus and kinematic principles. By integrating the acceleration with respect to time, we get the velocity equation (v = u + at). Integrating the velocity equation with respect to time gives the displacement equation (s = ut + 0.5at^2). Alternatively, we can derive the third equation by eliminating time from the first two equations using algebraic manipulation.
3. Can the equations of motion be used for non-uniform motion?
Ans. Yes, the equations of motion can be used for non-uniform motion as long as the acceleration is known or can be determined. However, it is important to note that these equations assume constant acceleration, so they may not accurately describe the motion in cases of varying acceleration.
4. How can the equations of motion be applied to real-life situations?
Ans. The equations of motion can be applied to various real-life situations involving motion. For example, they can be used to calculate the distance traveled by a car with known initial velocity and acceleration over a certain time period. They can also be used in projectile motion problems to determine the range, maximum height, and time of flight of a projectile.
5. Are the equations of motion applicable to all objects and situations?
Ans. The equations of motion are applicable to objects and situations where the motion can be described by constant acceleration. However, they may not be suitable for objects experiencing non-uniform acceleration or situations involving complex forces. In such cases, more advanced mathematical models or concepts, such as calculus or Newton's laws of motion, may need to be employed.
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