5. Is the motion of the stars around Polaris (NCP) due to the rotation (daily motion) or revolution (yearly motion) of Earth

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.

i need the answer to this too but idk it ; -;

battery with hi vtge high val resist in series

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.