When the truck broke through the guardrail it was launched from the freeway with a horizontal velocity of 10.7 m/s and fell a vertical distance of 50 feet (15.2 m). a) Draw a simplified sketch showing the trajectory of the truck being launched horizontally with the velocity of 10.7 m/s. b) Determine the time that it would take for the truck to freefall the 50 feet( 15.2 m). c) Ignoring air resistance and scraping the building on the way down, determine the instantaneous velocity of the truck just before impacting the ground.

Gas is all around us which means that the atmosphere

The answer would be a) -80of

Stars are born within the clouds of dust and scattered throughout most galaxies. a familiar example of such as a dust cloud is the orion nebula. turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. as the cloud collapses, the material at the center begins to heat up. known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the milky way are paired or in groups of multiple stars.therefor, i would say the answer is: dust and gases contract.i hope this ! < 3