2.1 moving in a straight line, divided into 2 types: 1. motion in a straight line going the same direction throughout, such as throwing objects up to direct cars. Moving forward in a straight line. 2. motion in a straight line, but had to move back in the direction, such as a vehicle to slide forward in a straight line. When the car is turning back the direction. Make the movement direction opposite.
การแปล กรุณารอสักครู่..
