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Answer:
The motion of the ball relative to the ground is stationary
The motion of the ball relative to the wagon is backwards
Explanation:
To describe the motion of the ball relative to the ground, we note that
Assuming the ball is perfectly round and rotate freely, then we have
Force on the ball due to motion of the wagon = 0 N,
Then by the law of motion, an object will remain at rest when no force is applied to it
Therefore, apart from rotation of the ball, it will remain no displacement relative to the ground.
The motion of the ball relative to the wagon
Relative to the wagon, the ball appears to be moving in the opposite direction to the wagon, that is backwards.
The motion of the ball relative to the ground is unmoving, and the motion relative to the wagon is towards the back.
What is motion of an object?
An object, said to be in motion, when the position of the object changes with respect to the time in space.
The ball is placed in the middle of a wagon, and then accelerate the wagon forward.
The motion appears here are,
- Motion of the ball relative to the ground-The ball is kept on the wagon. There should be some friction between the ball and the surface of the wagon. There will be no force applied on the ball. Therefore, the ball remains non-moving relative to the ground.
- Motion relative to the wagon-The ball will move in the backward direction with respect to the wagon. Thus, relative to the wagon, the motion of the ball is towards the back.
Hence, the motion of the ball relative to the ground is stationary, and the motion relative to the wagon is towards the back.
Learn more about the motion of an object here;
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