PPYQ A man throws some balls with the same speed vertically upwards one after the other at an interval of 2 seconds. What should be the speed of the throw so that more than two balls are in the sky at any time? (Given g = 9.8 m/s2) 1. More than 19.6 m/s 2. At least 9.8 m/s 3. Any speed less than 19.6 m/s 4. Only with speed 19.6 m/s Ruhul Amin Alig
PPYQ A particle moves along a straight line OX. At a time t (in seconds), the displacement x (in metres) of the particle from O is given by x= 40 + 12t – t3. How long would the particle travel before coming to rest? 1. 24 m 2. 40 m 3. 56 m 4. 16 m Ruhul Amin Alig
PMQ A particle moves a distance x in time t according to equation X = (t + 5)-1 The acceleration of the particle is proportional to Ruhul Amin Alig
PMQ A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds, another ball is thrown downwards from the same platform with a speed v. The two balls meet after 18 seconds. What is the value of v? Ruhul Amin Alig
PMQ A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to v ( x ) = βx − 2 n v(x) =βx-2n where, β β and n are constants and x is the position of the particle. The acceleration of the particle as a function of x is given by Ruhul Amin Alig
