141504 A car moving with a velocity of \(20 \mathrm{~ms}^{-1}\) stopped at a distance of \(40 \mathrm{~m}\). If the same car is travelling at double the velocity, the distance travelled by it for same retardation is :

141506 The displacement \(x\) of a particle varies with time \(t\) as \(x=a e^{\alpha t}+b e^{-\beta t}\) where \(a, b, \alpha, \beta\) are positive constants. The velocity of the particle will

141509 Two object \(P\) and \(Q\), travelling in the same direction starts from rest. While the object \(P\) starts at time \(t=0\) and object \(Q\) starts later at \(t=30 \mathrm{~min}\). The object \(P\) has an acceleration of \(40 \mathrm{~km} / \mathrm{h}^{2}\). To catch \(P\) at a distance of \(20 \mathrm{Km}\), the acceleration of \(Q\) should be

141510 Two balls of equal masses are thrown upward along the same vertical direction at an interval of \(2 \mathrm{~s}\), with the same initial velocity of \(39.2 \mathrm{~m} / \mathrm{s}\). The two balls will collide at a height of

141504 A car moving with a velocity of \(20 \mathrm{~ms}^{-1}\) stopped at a distance of \(40 \mathrm{~m}\). If the same car is travelling at double the velocity, the distance travelled by it for same retardation is :

141506 The displacement \(x\) of a particle varies with time \(t\) as \(x=a e^{\alpha t}+b e^{-\beta t}\) where \(a, b, \alpha, \beta\) are positive constants. The velocity of the particle will

141509 Two object \(P\) and \(Q\), travelling in the same direction starts from rest. While the object \(P\) starts at time \(t=0\) and object \(Q\) starts later at \(t=30 \mathrm{~min}\). The object \(P\) has an acceleration of \(40 \mathrm{~km} / \mathrm{h}^{2}\). To catch \(P\) at a distance of \(20 \mathrm{Km}\), the acceleration of \(Q\) should be

141510 Two balls of equal masses are thrown upward along the same vertical direction at an interval of \(2 \mathrm{~s}\), with the same initial velocity of \(39.2 \mathrm{~m} / \mathrm{s}\). The two balls will collide at a height of

141504 A car moving with a velocity of \(20 \mathrm{~ms}^{-1}\) stopped at a distance of \(40 \mathrm{~m}\). If the same car is travelling at double the velocity, the distance travelled by it for same retardation is :

141506 The displacement \(x\) of a particle varies with time \(t\) as \(x=a e^{\alpha t}+b e^{-\beta t}\) where \(a, b, \alpha, \beta\) are positive constants. The velocity of the particle will

141509 Two object \(P\) and \(Q\), travelling in the same direction starts from rest. While the object \(P\) starts at time \(t=0\) and object \(Q\) starts later at \(t=30 \mathrm{~min}\). The object \(P\) has an acceleration of \(40 \mathrm{~km} / \mathrm{h}^{2}\). To catch \(P\) at a distance of \(20 \mathrm{Km}\), the acceleration of \(Q\) should be

141510 Two balls of equal masses are thrown upward along the same vertical direction at an interval of \(2 \mathrm{~s}\), with the same initial velocity of \(39.2 \mathrm{~m} / \mathrm{s}\). The two balls will collide at a height of

141504 A car moving with a velocity of \(20 \mathrm{~ms}^{-1}\) stopped at a distance of \(40 \mathrm{~m}\). If the same car is travelling at double the velocity, the distance travelled by it for same retardation is :

141506 The displacement \(x\) of a particle varies with time \(t\) as \(x=a e^{\alpha t}+b e^{-\beta t}\) where \(a, b, \alpha, \beta\) are positive constants. The velocity of the particle will

141509 Two object \(P\) and \(Q\), travelling in the same direction starts from rest. While the object \(P\) starts at time \(t=0\) and object \(Q\) starts later at \(t=30 \mathrm{~min}\). The object \(P\) has an acceleration of \(40 \mathrm{~km} / \mathrm{h}^{2}\). To catch \(P\) at a distance of \(20 \mathrm{Km}\), the acceleration of \(Q\) should be

141510 Two balls of equal masses are thrown upward along the same vertical direction at an interval of \(2 \mathrm{~s}\), with the same initial velocity of \(39.2 \mathrm{~m} / \mathrm{s}\). The two balls will collide at a height of