What does the path of an object look like when it is in uniform motion?

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12 Thermodynamics • Introduction • 12.1 Zeroth Law of Thermodynamics: Thermal Equilibrium • 12.2 First law of Thermodynamics: Thermal Energy and Work • 12.3 Second Law of Thermodynamics: Entropy • 12.4 Applications of Thermodynamics: Heat Engines, Heat Pumps, and Refrigerators • Key Terms • Section Summary • Key Equations • 22 The Atom • Introduction • 22.1 The Structure of the Atom • 22.2 Nuclear Forces and Radioactivity • 22.3 Half Life and Radiometric Dating • 22.4 Nuclear Fission and Fusion • 22.5 Medical Applications of Radioactivity: Diagnostic Imaging and Radiation • Key Terms • Section Summary • Key Equations • Teacher Support The learning objectives in this section will help your students master the following standards: • (4) Science concepts. The student knows and applies the laws governing motion in a variety of situations. The student is expected to: • (C) analyze and describe accelerated motion in two dimensions using equations, including projectile and circular examples. • (D) calculate the effect of forces on objects, including the law of inertia, the relationship between force and acceleration, and the nature of force pairs between objects. In addition, the High School Physics Laboratory Manual addresses content in this section in the lab titled: Circular and Rotational Motion, as well as the following standards: • (4) Science concepts. The student knows and applies the laws governing motion in a variety of situations. The student is expected to: • (C) anal...

Answer : Yes, an object which has moved certain distance can have zero displacement as we know displacement is the shortest distance between the starting or initial point and end or final point of an object which has moved. For eg. if a person starts moving from point A and comes back to point A then his displacement is zero. Answer : Given, a farmer covers 40 m in 40 s . So, he will cover 1 m in \( 40 \over 40 \) \( = 1 s \) Now, after 2 min 20 s which is equal to 140 s , he would have covered \( 140 \over 1 \) \( = 140 m \) Case 1: When the farmer starts moving from corner of the field Then, after 140 s he would have covered \( 140 \over 40 \) \( = 3.5 \) rounds of the field. So, displacement would have been, \( \sqrt Case 2: When the farmer starts moving from middle of any side Then, after 140 s he will be at the middle of the opposite side of his starting side So, his displacement will be 10 m. Case 3: When the farmer starts moving from any random point. Then his displacement will be in between 10 m and 14.1 m Answer : (a) False because displacement can be zero if an object returns to its initial position after covering certain distance. (b) False because the displacement of an object can be equal to distance travelled, but not greater as displacement is the shortest distance between initial and final position of an object, so how can it be greater then distance travelled. Answer : (i) If an object travels in a straight line and its velocity increases or decreases by e...

This highly depends on the context and is rather a question about nomenclature than physics. Usually, in elementary kinematics "uniform motion" is defined as motion along a straight path. Uniform motion here means an unchanged state of motion, that is a motion where the velocity remains constant. If the velocity remains the same $\vec v(t) = \vec v_0$, then the path will obviously be the straight line $\vec r(t) = \vec r_0 + t \vec v_0$. The term uniform circular movement is common when discussion the elementary kinematics of rotation, then the path will obviously be a circle. In more general terms, if you consider motion of an object constrained to a submanifold of space (that means some surface or some arbitrary path), then it would be natural to consider movement along geodesics as uniform motion. This notion coincides with the notion of uniform circular motion given above, if we constrain the object to move on a circle. It also coincides with the notion of a constant velocity: Geodesics are exactly those paths along which the velocity is covariantly constant.