Question

Which of the follow are examples of an object accelerating? (choose 4) A car turning a corner A ball rolling on the ground and slowing down OA box being pushed on the ground at a constant velocity A ball falling A paper falling to the ground with a constant speed OA ball moving up in the sky but slowing down A chair sitting on the ground

Answer 1

Answer:

Cart spinning, ball rolling, ball falling, ball going up

Explanation:

The acceleration of a body is a vector magnitude, this means that it also has a module, direction, therefore, any of the two things that change, the acceleration changes. Let's examine the examples:

- Car turning a corner. In this case the speed direction is changing, which is reflected in an acceleration of the system

- A ball rolling on the ground. As the speed is decreasing the acceleration module is changing

- Ball falling in this case the speed increases, so there is an acceleration

- Constant speed box. Here with the constant speed in module and direction There is no acceleration

- Paper falling with constant speed. As the speed is constant There is no acceleration

- Ball moving up. In this case the module gives the speed is decreasing, There is an acceleration

- Chair on the floor zero speed and does not change, therefore there is no acceleration