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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 4 - Motion in 2 Dimension > A car is moving horizontally along a straight line with a uniform velocity of 25ms^−1. A projectile is to be fired from this car in such a way that it will return to it after it has moved 100m. The speed of the projection must be.

A car is moving horizontally along a straight line with a uniform velocity of 25ms^−1. A projectile is to be fired from this car in such a way that it will return to it after it has moved 100m. The speed of the projection must be.

A particle starts from the origin with a velocity of 10ms^−1 and moves with a constant acceleration till the velocity increases to 50ms^−1. At that instant the acceleration is suddenly reversed. What will be the velocity of the particle when it returns to the starting point?