Elitist still believe that few individuals still control enormous resources.
Of all the causes for the War of 1812, the impressment of American sailors into the Royal Navy was the most important for many Americans. The British practice of manning naval ships with "pressed" men, who were forcibly placed into service, was a common one in English history, dating back to medieval times
Answer: PE = 800j, KE = 800J
Explanation:
To calculate the potential energy, we use the formula
Potential Energy = Mgh
M = 20kg, g = 10m/sˆ2 , h = 4m
=20 × 10 × 4
=800J
At the maximum height S = 4 and the initial velocity u = 0 The acceleration g = 10m/sˆ2
Using the third equation of motion
vˆ2 = uˆ2 + 2as
= 0ˆ2 + 2 × 10 × 4
vˆ2 = 80
Kinetic Energy (KE) is given by
KE = ½ mvˆ2
= ½ × 20 × 80
=800J
