Question

如图所示，在一次“飞车过黄河”的表演中，汽车从最高点至着地点经历时间0.8s，两点间水平距离30m．求：                                                                                                                           

（1）最高点与着地点的高度差；                                                                                    

（2）汽车的水平速度．（g取10m/s²）                                                                            

                                                                                            

                                                                                                                                       

Answer 1

（1）最高点和着地点的高度差h=．

（2）汽车的水平速度．

答：（1）最高点与着地点的高度差为3.2m．

（2）汽车的水平速度为37.5m/s．