To drive your car from Auburn to Atlanta (173.8 km) takes a significant amount of work. Assuming the force of friction between t
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Hi there!
Kinetic energy can be calculated using the following:
Where:
KE = Kinetic energy (J)
m = mass (kg)
v = velocity (m/s)
Plug in the given values:
Explanation:
Given that, you are taking a picture of a giraffe that is standing far away from you. The image is just too small, so you swap the 60-mm-focal-length lens in your camera for a 960 mm telephoto lens such that,
We need to find the the factor with which the size of the image increases. It can be calculated by taking ratios of both
So,
So, the size of image increases by a factor of 16. Hence, this is the required solution.