Related InterviewSolutions

• A train accelerating uniormly from rest attains a maximum speed of `40ms^(-1)` in `20s`. It travels at this speed for `20s` and is brought to rest with uniform retardation i further `40s`. What is the average velocity during this period?A. `80m//s`B. `25m//s`C. `40 m//s`D. `30m//s`
• A body moves with uniform acceleration, which of the following graph is correct?A. B. C. D.
• Two particles start from the same point with different speeds but one moves along `y=a sin omega x` and other moves along curve `y=cos omegax`A. they must collide after some timeB. they never collide with each otherC. they may collide at the point `P((pi)/(4omega),a/(sqrt(2)))`D. they must collide at the point `P`
• A person travelling on a straight line moves with a uniform velocity `v_1` for some time and with uniform velocity `v_2` for the next equal time. The average velocity v is given byA. `v=(v_(1)+v_(2))/2`B. `2/v=1/(v_(1))+1/(v_(2))`C. `v=sqrt(v_(1)v_(2))`D. `1/v=1/(v_(1))=1/(v_(2))`
• For a man who wants to cross the river, with the shortest path `AB`, find the anglet `theta` (see figure) A. `sin^(-1)(3/4)`B. `sin^(-1)(4/3)`C. `30^(@)`D. Given situation is not possible
• Do we observe the time variation of position is nature as shown in the graph? A. yesB. noC. oftenD. Rarely
• Rain water is falling vertically downward with velocity `v`. When velocity of wind is `u` in horizontal direction, water is collected at the rate of `R m^(3)//s`. When velocity of wind becomes `2u` in horizontal direction. The rate of collection of water in vessel isA. `R`B. `R/2`C. `2R`D. `(Rsqrt(4u^(2)+v^(2)))/(sqrt(u^(2)+v^(2)))`
• Rain drops fall vertically at a speed of `20m//s`. At what angle do they fall on the wind screen of a car moving with a velocity of `15m//`, if the wind screen velocity incined at an agle of `23^(@)` to the vertical `("cot"^(-1)4/3~~37^(@))`A. `60^(@)`B. `30^(@)`C. `45^(@)`D. `90^(@)`
• Figure shows four paths for a kicked football. Ignoring the effects of air on the flight, rank the paths according to the initial horizontal velocity component, highest first. .A. `1,2,3,4`B. `2,3,4,1`C. `3,4,1,2`D. `4,3,2,1`