Kepler’s law of planetary motion: 1) All planets revolve around sun in elliptical orbit and the sun situated at any one foci of that ellipse. 2) The speed of planet varies in such a way that the radius vector drawn from the sun to a planet sweeps out equal area in equal interval of time. […]
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Learn how projectile motion changes when observed from a moving frame of reference. Explore key concepts, equations, and examples in this beginner-friendly physics guide. An observer A is stationary on ground. Another observer B is standing in a car which is moving with speed v along horizontal. 1. If B projects the ball vertically upward with […]
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Learn how projectile range varies with angle and understand the concept of complementary angles in projectile motion. Ideal for NEET, JEE Main, and JEE Advanced preparation with derivations, formulas and solved problems. Range: Range of projectile motion is R = = = . At 450 range is maximum. As sin2 = 1 = sin 90 […]
Explore More Concepts on height of projectile motion: 1. Let us consider the particle is projected with initial speed u at an angle with ground. As the particle just clears two vertical wall each of height h at time t1 and t2 respectively then, h = usint1 – ——— (i) and h = usint2 – ——- (ii) […]
Explore More Understand the velocity components and trajectory equation in projectile motion with clear derivations and visual insights. Perfect for NEET, JEE Main, and JEE Advanced aspirants aiming for conceptual clarity and accuracy in physics. Velocity: A ball is thrown with a velocity at an angle with the horizontal. Neglecting air resistance, find the time after which […]
Explore More Projectile motion theory is one of the most fundamental topic in physics. It combines concepts from both horizontal and vertical motion under gravity. Projectile motion: The two dimensional motion of the body under the action of gravity is called projectile. Let us consider, a particle is thrown with initial velocity at an angle θ with […]
Explore MoreThe velocity-displacement graph of a particle is given. Plot acceleration-displacement graph of it. To plot acceleration-displacement graph we need an equation of acceleration and displacement from the given graph. Using equation of straight line (y = mx + c) we get, v = (-)x + v0. Slope of the graph is m = – (angle […]
Explore MoreRIVER – BOAT CONCEPT: In river boat concept VR = absolute velocity of river or velocity of river with respect to ground, VB = absolute velocity of boat or velocity of boat with respect to ground and VBR = velocity of boatman with respect to river or velocity of boat in still water. Let us […]
Explore MoreRELATIVE VELOCITY THEORY AND CONCEPTS THEORY: Relative velocity: Let us consider and are the velocity of two particles A and B creates angleθ. The velocity of A with respect to B is = –. The angle between and – is (180- θ) and is the resultant of and – . The magnitudes of is […]
Explore MoreWork: Work is said to be done when a force is applied on a body and the body is displaced through a certain distance in the direction of the applied force. If F is the force is applied on a body at an angle θ with displacement S, then work done on the body is […]
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