Concept of free fall (answer) l Ashu sir l#science #cbse #physics #mechanics #freefall

[anjulishukla]

P = mv ( momentum)
Same apply to bullet, mass is very less but its impact is much more because of its high velocity

[hecker]

Sir u are underrated u will big one day

[amanpandey]

Even if the marble is dropped from 50m with speed less than 80km/h...
It can still kill a man if aimed properly at the balls....

[abhishekv]

Better then the normal videos this reel video is awesome

[musgenix]

Ur all questions are really interesting..

[jagga]

If speed is 2as then a feather will also travel at 430km/hr approx and can also kill us .( But we all know air resistance for feather 🪶 is to high and might not travel at 10km / hr at time of impact).

[Aspirant]

Thank you sir you can sort out my doubt

[sumitpaswan]

What a nice question. Sir. ! Keep going with this type of questions it will helps to understand concept easily. 😃😃😃😃😃😃😃😃😃😃😃😃😃✌️✌️✌️✌️✌️✌️✌️

[pwian]

Ye marbel to insaan ke stomach KO faad dega 😨

[vivekprajapati]

Yes sir because marble velocity increase downward.

[subhamghosh]

If we neglect air resistance, then also as per my knowledge, due to earth's rotation the ball will not reach exactly downward along a straight line(as the height is very high). Due to earth's rotation it will follow a curved path eastward.

[swastiksharma]

But the air resistance will act upwards making the marble non deadly. But on a planet with Moon like atmosphere it is super deadly considering the gravity (g) will be of earth.

[ayusharya]

Aapke jaise physics teacher mil jte toh physics easy bn jti

[maheshchauhan]

height of Khalifa (s) = 828 meters
initial velocity (u) = 0 m/s
acceleration due to gravity (g) = -9.8 m/s
2as = v^2 - u^2
2 × -9.8 × -828 = v^2 - (0)^2
16228.8 = v^2
127 m/s = v
v= 457 km/hr

[manasagrawal]

Moral: Burj Khalifa pe jaake kanche na udaye

[rohitchoudhary]

sir 15-20 m se kuch giraye to air resistance ko negligible kar sakte ...par itni hight se girane par air resistance bhut important h kyuki velocity terminal velocity se jyada ni hogi...or marble k liye terminal velocity itni ni ho payi ki kisi ki jaan le sake...

[shining_starq]

In real life tho, it wouldn't take the life of a human cause the marble will reach its terminal velocity if we don't ignore air resistance.

[mueenahmed]

Zyada hight se throw kr rhe h...to uskii velocity high hogii, v high hogii to usnee momentum zyada hogaa
Uss marble kaa bahut zyada high momentum hogaa which can kill the person....marble ka mass matter nhi krtaa uski velocity matter krtii h

[rajdeepkalita]

Hm velocity br jai to momentum bhi bar jayaga to insan ko mr skta ha(same like bullet)
Thank you Sir ☺️

[zamuzahid]

but no we have to consider real life situation without ignoring air resistance ..then as it reaches the terminal velocity which is it highest constant velocity which is approx 2.8 m\s . .so not high enough to kill someone