A ball is dropped from a high rise platform t = 0 starting from rest. Afte4r 6 s another ball is thrown downwards from the same platform with a speed υ. The two balls meet at t = 18 s. What is the value of υ?

A ball is dropped from a high rise platform t = 0 starting from rest.

1.	A ball is dropped from a high rise platform t = 0 starting from rest. Afte4r 6 s another ball is thrown downwards from the same platform with a speed υ. The two balls meet at t = 18 s. What is the value of υ?
A.	74 m/s
B.	64 m/s
C.	84 m/s
D.	94 m/s
Answer» B. 64 m/s

Discussion

No Comment Found

Related MCQs

The near point and far point of a person are 40 cm and 250 cm respectively. Determine the power of the lens he/she should use while reading a book kept at distance 25 cm from the eye.
On the same path, the source and observer are moving such ways that the distance between these two increases with the time. The speeds of source and observer are same and equal to 10 ms−1 with respect to the ground while no wind is blowing. The apparent frequency received by observer is 1950 Hz, then the original frequency must be (the speed of sound in present medium is 340 m/s)
If the intensity is increased by a factor of 20, then how many decibels in the sound level increased?
The force on a particle as the function of displacement x (in x-direction) is given by F = 10 + 0.5x The work done corresponding to displacement of particle from x = 0 to x = 2 unit is
A block having mass m collides with an another stationary block having mass 2 m. The lighter block comes to rest after collision. If the velocity of first block is v, then the value of coefficient of restitution will must be
The phase difference between the flux linked with a coil rotating in a uniform magnetic field and induced emf produce in it is
While keeping area of cross and length of solenoid one both doubled. The self inductance of the coil will be
A uniform disc is acted by two equal forces of magnitude F. One of them, acts tangentially to the disc, while other one is acting at the central point of the disc. The friction between disc surface and ground surface is nF. If r be the radius of the disc, then the value of n would be (in N)
A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature slightly, then
A ball is dropped from a bridge 122.5 m above a river. After the ball has been falling for 2s, a second ball is thrown straight down after it. What must the initial velocity of the second ball be so that both hit the water at the same time?

A ball is dropped from a high rise platform t = 0 starting from rest. Afte4r 6 s another ball is thrown downwards from the same platform with a speed υ. The two balls meet at t = 18 s. What is the value of υ?

Discussion

No Comment Found

Related MCQs

Reply to Comment