Why do teachers give such hard questions? anyways hopefully your question will get answered! (btw i also need the points but yeah gl!!!)
The stroke that begins a point in volleyball is called a serve
Answer:
Explanation:
the momentum of a body is defined as the product of mass of body and the velocity f the body.
P = m x v
Where, m is the mass and v be the velocity of the body.
it is a vector quantity and its unit is newton second.
When the velocity of the object is zero, the momentum is also zero.
Newtons' first law states that the body is at rest or in motion , it remains at rest or in motion until and unless an external force is not applied on the body.
So, When a body is at rest it remains at rest.
Answer:
The Sun’s magnetic field, solar winds and the Earth's magnetic tail are responsible for making the aurora lights in the north and south poles look different, say international scientists. Researching the interactions of these phenomena have debunked previous theories around why the lights can have different shapes and can occur in different locations. This research also helps scientists to better understand the interactions between the sun and earth, which could help with predicting space weather.
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