A particle is moving with velocity vecv = k( y hat(i) + x hat(j)) , where k is a constant . The genergal equation for its path is
A particle moves with uniform velocity. It meansThe particle is moving with constant speed. The particle moves along a straight line.
aA particle moves with constant acceleration a. The expression v_{\rm i}+at represents the particle's velocity at what instant in time? 微粒移动以恒定的加速度a。 表示v_ {\ rm i} +at代表粒子速度在什么瞬时及时?[translate] ait was a pity that the great writer died for his works unfinish...
A particle is moving on an axis Ox. From time t=0\ s to time t=32\ s, the particle is travelling with constant velocity 15\ ms^(-1). The particle then decelerates from 15\ ms^(-l) to rest in T\ seconds.The total distance travelled by the particle is 570\ m.Find the va...
An inertial frame S'is moving with a constant velocity with respect to another inertial frame s. Then A) kinetic energy of an object when viewed from S and S' will be different D B)work done on an object when evaluated in frame S and S' will be different C)work energy theorem is ...
15 Which of the following statements is correct for a particle moving in a vertical circle with constant angular velocity? B A The kinetic energy varies but the centripetal force acting on the particle is constant. B The kinetic energy of the particle is constant but the centripetal force ...
The problem of the motion of a particle (point mass) with a constant velocity modulus in a Newtonian central gravitational field is investigated by two methods: using Lagrange's equations with a multiplier, and using the equations of dynamics proposed earlier [1] for systems with non-holonomic ...
An object is moving with constant velocity in a straight line. Which of the following statements is true?A.A constant force is being applied in the direction of motion.B.There are no forces acting on the object.C.The net force on the object is zero.D.The
Consider a particle moving with constant speed such that its acceleration of constant magnitude is always perpendicular to its velocity.A.It is moving in a straight line.B.It is moving in a circle.C.It is moving in a parabola.D.It is moving in a hyperbol
the forces acted by the particles on each other sum to zero (粒子的相互作用力为零)the velocity of the center of mass is initially zero(初始为零)the center of mass is at the geometric center of the system (质心位于系统的几何中心)