曲线运动基础练习题(二)（Basic exercises of curve motion (two)）.doc

曲线运动基础练习题(二)（Basic exercises of curve motion (two)） Basic exercises of curve motion (two) First, the multiple-choice question 1. The height of the man-made earth satellite from the ground is equal to the earths radius R. The satellite moves at a speed of V along a circular orbit. The gravity acceleration of the ground is g, and there is () A.v, =2, B.v = C.v = D.v= 2, as shown in the diagram, the car at speed V0 uniform speed to the left, then objects, objects, M will how to exercise (?) A. rises at a steady rate B. accelerates up C. slows down and goes up D. first accelerates, then slows down 3, as shown in figure a, the quality of B was m, a from the angle of smooth fixed inclined top 450 of the initial rate of decline, while B from the top of slope at a speed of two V0 level throw movement process following statement is correct () A. the moment before landing, the two are at the same rate The acceleration of the B. two is always the same Both C.a and B do uniform motion D.a, B landing at the same time 4, as shown in the figure, there is a belt transmission device, two rounds of radius are R and R, R=2r, M for the big wheel edge of a point, N is a small part of the edge of the small, if the belt does not skid, then M, N two points () A. line speed is equal in size B. angular velocity is equal The C. centripetal acceleration is equal in magnitude The centripetal acceleration of the D.M point is greater than the centripetal acceleration of the N point 5, as shown in figure (top view), the speed of V uniform train compartment has a horizontal surface, a small B on the desktop. If the carriages suddenly found the ball along the dotted line from B to A. The movement can be judged (train) A. slow down, turn to the south, slow down at B., turn North C. accelerates, turns south, accelerates D., and turns north 6, a plane horizontal uniform flight, the plane every 1 seconds to release a ball, has a total release of 4, excluding air resistance is four (the ball) A. always l