Velocity of Separation and Approach
Trending Questions
Q. A smooth sphere of mass M moving with velocity u directly collides elastically with another sphere of mass m at rest. After the collision, their final velocities are V and v respectively. The value of v is:
- 2uMm
- 2umM
- 2u1+mM
- 2u1+Mm
Q. A prticle of mass m moves with velocity v0=20 m/s towards a large wall that is moving with velocity v=5 m/s towards the particle as shown. If the particle collides with the wall elastically, then find the speed of the particle just after collision. (Assume collision with the wall is elastic)
- 30 m/s
- 20 m/s
- 25 m/s
- 22 m/s
Q. A prticle of mass m moves with velocity v0=20 m/s towards a large wall that is moving with velocity v=5 m/s towards the particle as shown. If the particle collides with the wall elastically, then find the speed of the particle just after collision. (Assume collision with the wall is elastic)
- 30 m/s
- 20 m/s
- 25 m/s
- 22 m/s
Q. A small ball of mass m is connected by an inextensible massless string of length l with another ball of mass M=4m. They are released with zero tension in the string from a height h as shown in the figure. The time t after which the string becomes taut for the first time after the mass m collides with the ground is (Assume all the collisions to be elastic)
- t=l√gh
- t=l√3gh
- t=3l√2gh
- t=l√2gh
Q. A small ball of mass m is connected by an inextensible massless string of length l with another ball of mass M=4m. They are released with zero tension in the string from a height h as shown in the figure. The time after which string becomes taut for the first time after the release(after the mass M collides with the ground ) is l√ngh, where n=
(Assume all collisions to be elastic)
(Assume all collisions to be elastic)