直线运动(一)（Linear motion (1)）.docVIP

直线运动(一)（Linear motion (1)） Collected by oneself Mistakes are unavoidable For reference only In case of error Please correct me! Thank you Rectilinear motion 1. An object that begins to move uniformly from a standstill to a straight line The time taken from the start of the movement through the three successive displacements is T seconds, 2T seconds, and 3T seconds The three section displacement ratio is ______:_________:_________ The average speed of the three object displacement ratio _______:________:_______ 2, starting from the rest of the body to do uniform speed change linear movement, 3 seconds through the displacement of S The object passes in 1/3 in second seconds, and in 1/3 after third seconds, the displacement is S1 and S2 respectively The object takes second seconds to move 1/3, and the time is T1 The object takes third seconds, and the displacement of 1/5 takes T2 Then S1:S2=________, t1:t2=____________ 3 a particle starts at rest from A and does uniformly to accelerate rectilinear motion The acceleration size is A1 After time t, arrive at B Due to the reverse force Do a uniformly variable linear motion with a acceleration size of A2 Again, the t time is just back to the starting point The ratio of the acceleration of the two times, a1:a2_________, the speed ratio of v1:v2_________ 4, an object to do accelerated linear motion A, B and C are followed in three positions B is the midpoint of AC The acceleration of the object in the AB section is A1 The acceleration in the BC section is A2 The instantaneous speed of B is measured at VB= Compare the size of A1 and A2 with () A.a1, A2, B., a1=, A2, C, a1, A2, D., lack of condition Cannot compare 5, in order to determine a car starting on a flat straight road when the acceleration (car starting motion can be approximately regarded as a constant acceleration motion) Someone has photographed a number of exposures on the same film, as shown. If you shoot, expose every 2S The car body has a total length of 4.5m, s