At 12 seconds what is the direction of the velocity of the rocket what is the direction of the acceleration rocket

rocket at the moment of clearance, the velocity and acceleration have the same direction, vertical upwards.

Explanation:

In a rocket at the moment of clearance, the velocity and acceleration have the same direction, vertical upwards.

In the case of landing we have a downward acceleration due to the force of gravity and upward velocity.

a electromagnetic waves

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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