A man is travelling on a flatcar which is moving up a plane that is inclined at angle θ to the horizontal with a speed of 5 m/s (cosθ=45). He throws a ball towards a stationary hoop located above the incline in such a way that the ball moves parallel to the slope of the incline while going through the centre of the hoop. The centre of the hoop is 4 m high from the man's hand, perpendicular to the incline. The time taken (in seconds) by the ball to reach the hoop is [Take g=10 m/s2]

A man is travelling on a flatcar which is moving up a plane that is in

1.	A man is travelling on a flatcar which is moving up a plane that is inclined at angle θ to the horizontal with a speed of 5 m/s (cosθ=45). He throws a ball towards a stationary hoop located above the incline in such a way that the ball moves parallel to the slope of the incline while going through the centre of the hoop. The centre of the hoop is 4 m high from the man's hand, perpendicular to the incline. The time taken (in seconds) by the ball to reach the hoop is [Take g=10 m/s2]
Answer» A man is travelling on a flatcar which is moving up a plane that is inclined at angle $θ$ to the horizontal with a speed of $5 m/s$ $(cos θ = \frac{4}{5})$ . He throws a ball towards a stationary hoop located above the incline in such a way that the ball moves parallel to the slope of the incline while going through the centre of the hoop. The centre of the hoop is $4 m$ high from the man's hand, perpendicular to the incline. The time taken (in seconds) by the ball to reach the hoop is [Take $g = 10 {m/s}^{2}$ ]

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