two objects each of mass 2.5 kg are moving in a straight line but in the opposite direction the velocity of each object is 4.5 metre per second before the collision during which the stick together what will be the Velocity of the combined object after the collision
Answers
Given :
Two objects each of mass 2.5kg are moving in a straight line but in the opposite direction at a velocity of 4.5m/s.
- They stick after collision.
To Find :
Velocity of the combined object after the collision.
Solution :
❒ Since no net force acts on the whole system, linear moment of the system is conserved.
- We know that momentum is defined as the product of mass and velocity.
Initial momentum of the system will be equal to the final momentum
➙ P (initial) = P (final)
- Velocity of the second object will be negative as it is moving in opposite direction.
➙ mu + m(-u) = 2mv
➙ m (u - u) = 2mv
➙ 0 = 2v
➙ v = zero m/s
∴ After collision, combined object will come at rest.
Given :
Two objects each of mass 2.5kg are moving in a straight line but in the opposite direction at a velocity of 4.5m/s.
They stick after collision.
To Find :
Velocity of the combined object after the collision.
Solution :
❒ Since no net force acts on the whole system, linear moment of the system is conserved.
We know that momentum is defined as the product of mass and velocity.
Initial momentum of the system will be equal to the final momentum..
➙ P (initial) = P (final)
Velocity of the second object will be negative as it is moving in opposite direction.
➙ mu + m(-u) = 2mv
➙ m (u - u) = 2mv
➙ 0 = 2v
➙ v = zero m/s