List of top Physics Questions on Motion in a straight line asked in COMEDK UGET

Which one of the following represents uniform motion ?

Water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at an instant when the first drop touches the ground. The height, in m, of the second drop above the ground at that instant is (Take g = 10 m s$^{-2}$)

A stone dropped from the top of a tower reaches ground in 4 s. Height of the tower is $(g = 10 \, m/s^2)$

A body when released from the top of a tower of height $h$ reaches the ground in time 1 second. Time in second at which it is a height $ \frac{h}{2}$ above the groun.d is

A train moving with a speed of 36 kmph takes 14 s to cross a bridge of length 100 m. The length of the train is