Use this formula:
final speed = initial speed + acceleration * time
0 = 13 - 3.1*t, t = 13/3.1 = 4.19354838709677 s = 4.2 seconds, might be enough since ur given 1 decimal place precision
C. 
The kinetic energy of a body is the ability to perform work due to its movement given by the equation 
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To calculate the kinetic energy of a rocket with mass 15000kg and speed of 5200m/s:
Explanation:
option D
you compare the data from your experimental results to the prediction being tested
The Short Answer: Earth’s tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun’s most direct rays. So, when the North Pole tilts toward the Sun, it’s summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it’s winter in the Northern Hemisphere.
From one object's center of gravity to the other's
