Motion Characteristics of a Projectile

[@lokeshkoomarstyagee6742]

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[@PhysicsclassroomVideos]

Glad it helped

[@katellanos3730]

Thank you! You help me understand our lesson so much! God bless!

[@PhysicsclassroomVideos]

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Thank you Sir my physics teacher just showed us your video.

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[@freedomaugustus1555]

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[@tamaricashaw6967]

Thank you it's more clear now

[@kalyansamui6131]

Sir, You had taught us that there no any upward force is needed to give a body in upward motion.But how is that possible? ACCORDING TO ME, Consider a ball is placed on my hand.Then the u=0(initially it was in rest present in my hand) and I projected it upwards then it gains v as final velocity which is also the initial velocity when comes under gravitational pull as then v=0 when it reached at peak. And to attain the initial velocity there should be a force or not. If not why not? I think as I throw I had applied force in upwards. Please Explain me in briefly sir...plzz🙏🙏

[@PhysicsclassroomVideos]

I think you missed the point. Once the ball has been projected into the air there is no longer any need for an upward force to keep the ball going. The ball is then a projectile and acted up on only by the downward force of gravity

[@sanaashraf9775]

Thank you so much!! ❤️🙏This was so informative and easy to understand!

[@PhysicsclassroomVideos]

I'm glad it helped

[@Ferylopenguin]

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Thank you.

[@christopheryeung7222]

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[@rodrigoduterte5816]

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[@tcolbert1962]

Funny hearing that the speed of the ball doesn't affect the time it takes to hit the ground when recently I learned in universal Gravitation that if a object moves fast enough it can begin to orbit around the earth and never hit the ground.

[@PhysicsclassroomVideos]

Yes. That's covered in our gravitation videos. The curvature of the projectiles trajectory matches the curvature of the earth and so the projectile remains the same height above the Earth at all times.

[@ozultirich]

An object dropped from rest is a projectile..?whaaaaat? When it is dropped in the absence of air-resistance than it will directly fall in a straight line ( downward). It has only one dimensional motion which is downward but a projectile means an object moving in two dimensions ( horizental and vertical simultaneously).. Can I have an explanation on how an object dropped from rest and thrown vertically upward is a projectile ??

[@PhysicsclassroomVideos]

Its under the sole influence of gravity, accelerating at 9.8 m/s/s ... having a small horizontal velocity or even no horizontal velocity doesn't make it any less of a projectile ... and of course some of this discussion can be just splitting hairs over language. What's important is the recognition that a=9.8 m/s/s down, gravity is the only force, and the equations describing the motion are d=voy*t - 4.9*t^2

[@PhysicsclassroomVideos]

This I'm certain of though: an object moving in 2 dimensions is not the definition of a projectile.

[@freedomaugustus1555]

@@PhysicsclassroomVideos somehow i've got ur idea but still what makes me perplexed is that even tho an object that's movin in 2D is nat the official definition of projectile, but it's still an example of 2D motion like uniform circular motion... so what can u say abt this ??! I can't wait to hear what u've got 💖

[@PhysicsclassroomVideos]

A projectile that has a horizontal velocity IS an example of 2D motion. Not all projectiles have an x-velocity. The misunderstanding stems from the fact that projectiles are often introduced in a Physics class in a unit called 2D motion.

[@freedomaugustus1555]

@@PhysicsclassroomVideos Yeah that's actually what they taught us.. is that when they introduce projectile, they introduce it as a motion in 2D.....