(Physics of senior two) an object is thrown horizontally at the speed of 3m / s, and the landing speed is 5m / s. The flight time and displacement of the object are calculated

(Physics of senior two) an object is thrown horizontally at the speed of 3m / s, and the landing speed is 5m / s. The flight time and displacement of the object are calculated

If the horizontal velocity is 3 and the landing velocity is 5, the vertical velocity is 4 ((5 ^ 2-3 ^ 2) ^ 0.5)
Vertical direction v = GT
t=4/g=0.4
h=0.5gt^2=0.5*0.4*0.4*10=0.8
The horizontal movement is 0.4 * 3 = 1.2
s=(0.8^2+1.2^2)0.5=1.442