An artillery shell is launched on a flat, horizontal field at an angle of α = 31.7° with respect to the horizontal and with an initial speed of v0 = 202 m/s. what is the horizontal velocity of the shell after 18.96 s of flight? (neglect air friction. use the coordinate system where the x-axis is horizontal and points to the right; and the y-axis is vertical and points up.)

193.90 m/s

Explanation:

Given

launch angle

launch velocity

Horizontal velocity of the shell after

time of flight of Projectile

i.e. projectile is declining as

but horizontal component of velocity will remain same as there is no opposing force in horizontal direction

Horizontal component of velocity is

this could be newton#'s law of cooling. the cooling curve is exponential

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas