Projectile motion definition give me
Answers
Explanation:
Projectile motion is a form of motion experienced by an object or particle that is projected near the Earth's surface and moves along a curved path under the action of gravity only.
Answer :-
★ Projectile Motion :- A projectile is the name given to any body which once thrown into space with some initial velocity, moves thereafter under the influence of gravity alone without being propelled by any engine or fuel. The path followed by a projectile is called its Trajectory.
• Examples of Projectile Motion :-
i) A javelin thrown by an athelete.
ii) An object dropped from an aeroplane.
iii) A bullet fired from a rifle.
iv) A jet of water coming out from the side hole of a vessel.
v) A stone thrown horizontally from the top of a building.
➡ More to Know :-
• In the absence of air resistance, the motion of a projectile is considered as the combination of the following two independent motions :
i) Motion along horizontal direction with uniform velocity.
ii) Motion along vertical direction under gravity i.e., with uniform acceleration equal to g.
The two motions of a projectile along horizontal and vertical directions are independent of each other. This is called the Principle of Physical Independence of motions.
For example, if a ball is dropped downward from the roof of a building and simultaneously another ball is thrown in a horizontal direction, then both the ball will reach the ground at the same time but at different places. Clearly, the vertical motion is not being affected by the horizontal motion.
• Assumptions used in a Projectile Motion : While studying the motion of a projectile, we use the following assumptions -
a) There is no air resistance on the projectile.
b) The effect due to curvature of the earth is negligible.
c) The effect due to rotation of the earth is negligible.
d) For all points of the trajectory, the acceleration due to the gravity is constant both in magnitude and direction.
Hope this answer helps you.