This is designed to allow students to talk about new ideas in engineering.
Monday, October 6, 2008
The Rock
A rock is dropped at the same instant that a ball at the same elevation is thrown horizontally. Which will have the greater speed when it reaches the ground level? Explain your answer.
The rock will hit the ground faster but the ball will have more velicity. The ball has initial velocity so it will go faster when gravity reacts onto it. Everyone knows balls are fast.
The ball because it has the innitial velocity. It will have more velocity and acelerattion because of the gravitity. And because the mass of the ball and the rock is different.
6 comments:
The ball will. It has an initial velocity. It also has acceleration due to gravity.
The rock will hit the ground faster but the ball will have more velicity. The ball has initial velocity so it will go faster when gravity reacts onto it. Everyone knows balls are fast.
The ball will hit first. It has 9.8 m/s due to gravity. It will have a greater speed becaue it also has an initial velocity.
The ball because it is more aerodynamic. The mass of the rock will make it fall faster but the ball will gain more velocity.
The ball will have the greater speed. However, the rock will hit the ground sooner. THe ball has initial velocity so it is faster.
The ball because it has the innitial velocity. It will have more velocity and acelerattion because of the gravitity. And because the mass of the ball and the rock is different.
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