A cannonball is fired from the ground level at an angle of 60 degrees with the ground at a speed of 72 m/s. How long does it take the cannonball to reach it maximum height? what is the cannonball's total time of flight? what is the cannonball's range?

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

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the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19