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Elastic collision in Two Dimension (In Hindi)
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Through this lesson, you can learn about elastic collision in two dimention with equations.

## Kumar Ketan is teaching live on Unacademy Plus

Kumar Ketan
#Specialisation in Electronics #6 years teaching experience #Physics Faculty in Kota #"magical education" (211k+ subs) #Writer

U
A ball of mass 1kg moving along X-direction collides elastically with a statioinery ballof mass m.The first ball(mass=1kg) recoils at right angles to its original direction of motion.if the second ball starts moving at an angle 30 degrees with the x axis, Find the value of "m"
Kumar Ketan
6 months ago
Linear momentum conservation pr solve kijiye beta
DHARMAPURI KARTHIK
6 months ago
Sir, if possible please post the solution.
Mamta Pathak
4 months ago
tell the answer i.e just tell me value of m
Kalpak Saynak
4 months ago
m =2kg
pls replly to the question posted sir.
osm explanation
Kumar Ketan
9 months ago
Ty
very nice Sir
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2. ELASTIC COLLISION IN TWO DIMENSIONS In general, the collision are two dimensional, where the initial velocities and the final velocities may lie in a plane. So, when two bodies travelling initially along the same straight line collide without loss of kinetic energy and move along different directions in a plane after collision, the collision is said to be elastic collision in two dimensions

3. Before the collision mm2 After the collision uy sin 01/ cos 02/ cos

4. i initial i final Ki initial = final Knowns : m,m , , vi, Unknowns 121i

5. PROBLEMS OF COLLISIONS: Cart A (50. kg) approaches cart B (100. kg initially at rest) with an initial velocity of 30. m/s. After the collision, cart A locks together with cart B. both travels with what velocity? . Before collision after collision mA 50 kg, vA 30. m/s (50.kg)(30.m/s) + (100.kg)(0) (50.kg +100.kg)v = v 10. m/s mass increases by 3 times (50 kg to 150 kg), speed decrease by 3 times (30 m/s to 1O m/s)

6. A block of mass M initially at rest on a frictionless horizontal surface is struck by a bullet of mass m moving with horizontal velocity v. What is the velocity of the bullet-block system after the bullet embeds itself in the block? Before collision mv M(O) mv O after collision (m M)v mM)v' mv / (M+m)v'