Hi ...I came up another question again i guess you will help me out .Here is the question 1. A long jumper takes off at an angle of 20 degree with the horizontal and reaches a maximum height of 0.55 m at mid-flight. - how long is she in the air? - what is the forward component of her velocity? - how far does she jump? Here is what i try. A. how long is she in the air. i use the formula Y= vt + 1/2gt^2 which is -0.55 = 1/2 * -9.8 t^ so t= 0.335 sec and finaly i multiplay 0.335 * 2 = 0.67 sec. B. here is where i stop how can i find her velocity with out knowing the horizontal distance. i know the formula X = vt thank you.