A cannonball is fired at an angle of 30 degrees at an initial velocity of 100 m/s from a 100 m cliff. A) How far horizontally does the cannonball travel before hitting the ground? & How long is the time of flight?

Acommercial passenger jet can travel up to 970 km/hr at an altitude of 30,000 feet. at this speed, how long will it take the jet to travel 1,865 kilometers? a. 2.3 hrs b. 1.9 hrs c. 1.7 hrs d. 1.5 hrs

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by