วันพุธที่ 22 กุมภาพันธ์ พ.ศ. 2560





               The Effect of Gravity on speed



Height
Time to travel 5 meters
Distance travelled
20
                   4.38
                     -
20
                   4.41
                     -
20
                   4.34
                     -
40
                   5.87
                     -
40
                   4.27
                     -
40
                   5.03
                     -
60
                   5.25
                     -
60
                   5.49
                     -
60
                   5.61
                     -
80
                   7.19
                     -
80
                   7.21
                     -
80
                   7.18
                     -

Observation: 20 height go slow
                     40 height go faster than 20 height
                     60 height go faster than 20 and 40
                     80 height go fastest

1.Describe how the ball rolls off the ramp at each height- discuss the effect of bouncing or other factor.
Ans- 20 height the ball go straight line
        40 height the ball go same with 20
        60 height the ball go awry 
        80 height the ball go bounce
2.Discuss what is the fastest speed reached and any factors that could improve this.
Ans- Yes
3.Does the ball travel in the straight line, why or why not.
Ans- Yes because the ball will find the optimal  angle to maximize acceleration, so it travels the farthest and/or the fastest.