This would be an illustration of Newton's first law of motion. Law of inertia, an object moving at constant velocity will keep moving at constant velocity until a force is acted upon it. Inertia is the tendency of an object to keep moving in a particular direction resisting to change, unless a force acts upon the object.
        
             
        
        
        
Answer:
anyone know this or should i get my brother
 
        
             
        
        
        
Following the initial 4.0 seconds of travel, the cart moved 32m.
<h3>What is an equation of motion?</h3>
Physicists use equations of motion to describe how a physical system behaves in terms of how its motion changes over time.
The behavior of a physical system is described by the equations of motion in more detail as a collection of mathematical functions expressed in terms of dynamic variables. These variables typically comprise time and spatial coordinates, but they could also have momentum components. The most flexible option is generalized coordinates, which can be any useful variable that is a component of the physical system. In classical mechanics, the functions are defined in a Euclidean space, while curved spaces are used in relativity instead. The equations are the answers to the differential equations describing the motion of the dynamics of the dynamics of a system are known. The amount of motion changes according to the strength of the force and does so in the direction of the force's applied straight line.
To know more about equations of motion, click here:
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Answer:
The magnetic field at the center of the solenoid is 2.1  × 10⁻³ T
Explanation:
The magnetic field B at the center of the solenoid is given by
B = μ₀ni where μ₀ = permeability of free space = 4π × 10⁻⁷H/m, n = number of turns per unit length of the solenoid = 1100 turns per meter and i = current in the solenoid = 1.5 A.
So B = μ₀ni 
= 4π × 10⁻⁷H/m × 1100 × 1.5 A 
= 4π × 10⁻⁷H/m × 1650 A-turns/m 
= 20734.5 × 10⁻⁷T  
= 2.07345 × 10⁻³ T 
≅ 2.1  × 10⁻³ T 
So the magnetic field at the center of the solenoid is 2.1  × 10⁻³ T