1. Can we have a case in which there is no force acting on an object and yet the object is traveling at a constant speed of 1000 mile per second?.,
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
Answer:-
No Can we have a case in which there is no force acting on an object and yet the object is traveling at a constant speed of 1000 mile per second.
Because
No because Speed is the magnitude of the velocity. If an object is moving at constant speed, its velocity does not necessarily will be constant, as the direction might be changing, such as in the case of uniform circular motion.
We know that
According to Newton's second laws of motion
F = ma
Therefore a = F/m ( F = 0)
Acceleration (a) = 0
If there is no force applied to an object or if the forces applied to it balance each other, the net acceleration will be zero. The object will either be in rest or travel in a uniform straight line at constant velocity.
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