Allison kicks soccer ball so that it has an initial velocity 19 m/s at an angle of 21° above the ground. How much time does it take for the soccer ball to reach its maximum height

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g