b. month . . . day
c. year . . . month
d. year . . . day
The Earth rotates on its axis every __day________ and revolves around the Sun every _____year_____.
Rotation refer to an object's spinning motion about its own axis
Revolution refers to the object's orbital motion around another object
The earth rotates on its axis 23 hours, 56 minutes and 4 seconds which is approximately equal to one day whereas the earth revolve around sun in 365 days , 6hours , 9minutes which is nearly equal to an year.
Hence , correct option is a) day . . . year
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Answer:
1- 2.6 mph
2- 4.9 mph
Explanation:
See attachment
Answer:
60J
Explanation:
friction is the opposition to the motion of an object. Before a body can be set in motion, part of the energy or work-done must be used to overcome friction.
While kinetic energy is the energy associated with a body due to its motion.
Since friction tends to oppose the motion of a body,when a body start to move, some of the energy applied to the body to cause its motion is converted to heat due to friction.
Hence if a work-done of 100J is applied to a body that requires 40J of the work to overcome friction, the total change in the kinetic energy can be expressed as
Determine all unknowns.