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2. Naismith's rule - Wikipedia

   en.wikipedia.org/wiki/Naismith's_rule

   The original Naismith 's rule from 1892 says that one should allow one hour per three miles on the map and an additional hour per 2000 feet of ascent. [1][4] It is included in the last sentence of his report from a trip. [1][8] Today it is formulated in many ways. Naismith's 1 h / 3 mi + 1 h / 2000 ft can be replaced by:

3. Newton's laws of motion - Wikipedia

   en.wikipedia.org/wiki/Newton's_laws_of_motion

   The speed attained during free fall is proportional to the elapsed time, and the distance traveled is proportional to the square of the elapsed time. [39] Importantly, the acceleration is the same for all bodies, independently of their mass.

4. Velocity - Wikipedia

   en.wikipedia.org/wiki/Velocity

   e. Velocityis the speedin combination with the direction of motionof an object. Velocity is a fundamental concept in kinematics, the branch of classical mechanicsthat describes the motion of bodies. Velocity is a physical vectorquantity: both magnitude and direction are needed to define it.

5. Equations of motion - Wikipedia

   en.wikipedia.org/wiki/Equations_of_motion

   To state this formally, in general an equation of motion M is a function of the position r of the object, its velocity (the first time derivative of r, v = ⁠dr dt⁠), and its acceleration (the second derivative of r, a = ⁠d2r dt2⁠), and time t. Euclidean vectors in 3D are denoted throughout in bold.

6. Work (physics) - Wikipedia

   en.wikipedia.org/wiki/Work_(physics)

   For convenience, consider contact with the spring occurs at t = 0, then the integral of the product of the distance x and the x-velocity, xv x dt, over time t is ⁠ 1 / 2 ⁠ x 2. The work is the product of the distance times the spring force, which is also dependent on distance; hence the x 2 result.

7. Torque - Wikipedia

   en.wikipedia.org/wiki/Torque

   For a rotating object, the linear distance covered at the circumference of rotation is the product of the radius with the angle covered. That is: linear distance = radius × angular distance. And by definition, linear distance = linear speed × time = radius × angular speed × time. By the definition of torque: torque = radius × force.