A person on a car ismoving with constant velocity v drops a pen. What is theacce

Question

A person on a car ismoving with constant velocity v drops a pen. What is theacceleration of the pen relative to the (a) car and the (b)earth. A person on a car ismoving with constant acceleration a drops a pen. What is theacceleration of the pen relative to the (a) car and the (b)earth. A person on a car ismoving with constant velocity v drops a pen. What is theacceleration of the pen relative to the (a) car and the (b)earth. A person on a car ismoving with constant velocity v drops a pen. What is theacceleration of the pen relative to the (a) car and the (b)earth. A person on a car ismoving with constant acceleration a drops a pen. What is theacceleration of the pen relative to the (a) car and the (b)earth.

Explanation / Answer

Assuming there is no friction/wind resistance. The penny willfall to the ground and 9.8 m/s (gravity), the velocity will notchange.

Based on the info given, and my assumption;

The acceleration relative to the car is 0
The acceleration relative to the earth is 9.8 m/s^2 (gravity)

Beacause you and the object are moving at a constant velocity, theobject and you act as if you were standing still. Newton's firstlaw of mation states that an object at rest will stay at rest andan object in motion will stay in motion until acted on by anoutside force. This law holds in each frame of reference, thisframe of reference is called an inertial fram of reference. thereis no real force acting on the penny in reference to the car soacceleration in reference to the car is 0. This will explain the previous anwer. If someone can explainit better, feel free. :)

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