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Mdcat-past-papers Quiz

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821. Two stones of 10 kg and 50 kg fall through an 80 m high cliff. Which stone has maximum velocity at the bottom? (g = 10 m/s²)



822. Two buses moving at 100 km/h and 80 km/h respectively cross each other while moving in opposite directions. Velocity of one bus relative to the other is:



823. An elastic collision is the one in which:



824. The explosion of explosive material is application of:



825. If two objects of equal masses "m" are moving towards each other with the same speed "v" then what will be the total final momentum after elastic head-on collision?



826. A stone thrown horizontally from the top of a tall building follows a path that is:



827. If two equal masses are in motion with same individual speeds, we can conclude that:



828. In an elastic collision the total kinetic energy:



829. What is the time rate of change of linear momentum?



830. At what pair of angles for a projectile the ranges are equal?



831. The angle of projection of a projectile for which its maximum height and horizontal range are equal is:



832. At highest point in a projectile motion, the velocity will be:



833. Momentum is product of mass and velocity, then momentum and velocity are:



834. Two bodies having the same mass undergo elastic collision then their velocities after collision will be:



835. Momentum is product of mass and velocity then momentum and velocity are:



836. In explosions:



837. A projectile is launched. Its velocity is maximum at:



838. A projectile is thrown at an angle of 45° with horizontal and its range is R₁. Another projectile is thrown at an angle of 45° with vertical and its range is R₂. The relation between R₁ and R₂ is:



839. A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?



840. The newton-second is unit of: