The maximum speed of Tim is 16.95 m/s.
The given parameters:
- Mass of the rope, m = 71 kg
- Tension on the rope, T = 220 N
- Coefficient of kinetic friction, = 0.1
- Time of motion, t = 8 s
<h3>What is Newton's second law of motion?</h3>
- Newton's second law of motion states that, the force applied to an object is directly proportional to the product of mass and acceleration of the object.
The net force on Tim is calculated by applying Newton's second law of motion as follows;
Thus, the maximum speed of Tim is 16.95 m/s.
Learn more about net horizontal force here: brainly.com/question/21684583
The right answer for the question that is being asked and shown above is that: "The object's kinetic energy remains the same." If the net work done on an object is zero, you determine about the object's kinetic energy is that The object's kinetic energy remains the same.
The correct answer is
D) uneven heating of Earth's surface by the Sun.
Indeed, the solar radiation hits the surface with different angles between the equator and the poles: the angle the light rays form with the vertical line above a position is 90° at the poles, 23° at the tropics and 0° at the equator (see picture attached).
Moreover, the vegetation that can be found in the tropical zones absorbs most of the radiation, while, for example, the ice at the poles reflects it almost all into space.
For these reasons, tropics have the highest solar radiation, while the poles have the lowest. The difference in solar radiation creates air movement (winds) from the warmer to the cooler areas. Hence, Earth has winds going from the tropics towards the poles and towards the equator, as your diagram shows.
