Im really stuck, please help :(
A particle is projected vertically upwards with a speed of 30m/s from a point A. The point B is h metres above A. The particle moves freely under gravity and is above B for a time of 2.4 seconds. Calculate the value of h.
Please help, and thank you!
A particle is projected vertically upwards with a speed of 30m/s from a point A. The point B is h metres above A. The particle moves freely under gravity and is above B for a time of 2.4 seconds. Calculate the value of h.
Please help, and thank you!
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Let the highest point above B be x m
=> x = 4.905 * (1.2)^2 = 7.0632 m
=> (h + 7.0632) = [(30)^2 - 0] / 2 * 9.81
=> h = 45.8716 - 7.0632 m
=> h = 38.8 m.
=> x = 4.905 * (1.2)^2 = 7.0632 m
=> (h + 7.0632) = [(30)^2 - 0] / 2 * 9.81
=> h = 45.8716 - 7.0632 m
=> h = 38.8 m.