วันจันทร์ที่ 9 มกราคม พ.ศ. 2560

The effect of gravity on speed

1. Describe how the ball rolls off the ramp at each height-discuss the effect of bouncing or other factors.
Ans In case of small angle of the ramp. At starting position, the level of ball is not height. After we release the the ball. it roll off slowly at the begining and the speed will increase continuously. When it touch to the floor. The ball has some bouncing before change the direction to the horizontal. 
    If we increase the angle of the ramp. The level become higher.
the speed is faster when it touch to the floor. The ball has more bouncing before change the direction to the horizontal. 
    If we try to drop the ball at right angle of the ramp. The level become highest. Speed is fastest when it touch to the floor. The ball bouncing in the vertical direction.

                                                                                                        
2. Discuss what is fastest speed reached and any factors that could improve this.
Ans Speed of the ball is related to the height. We can increase the speed ny increase the height.

3. Does the ball travel in a straight line, why or why not?
Ans :  Most of the ball travel in straight line which there are 3 forms as follows;
1. Vertical direction because of gravity force.
2. Incline direction because of the angle of the ramp.
3. Horizontal direction because of it's guided by the floor.
However, there is not straight line traveling. It's curve direction during bouncing because of it combine between vertical and horizontal direction. It's called projectile.  








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