<h2>The initial velocity is 2.3
</h2>
Explanation:
Suppose the speed of car at point A is u .
Its kinetic energy K = mu²
At point B , its kinetic energy = K
and its gravitational potential energy = K = m g h = 2 m g R
here height h = 2 R ( radius of circle )
From the principle of conservation of energy
m u² = m u² + 2 m g R
m u² = 2 m g R
Therefore u = = 2.3
A) The car moves in the direction opposite of the action force.
By Newton's 3rd Law, for every action, there is an equal and opposite reaction.
It has a flexible vertibrae which allows it to move faster and fit into places . Plus it also allows it to get its prey easier
Answer:
Planets were like gods.
Explanation:
To the people of many ancient civilizations, the planets were thought to be deities. Our names for the planets are the Roman names for these deities. For example, Mars was the god of war and Venus the goddess of love.
Answer: When a ray of light approaches a smooth polished surface and the light ray bounces back, it is called the reflection of light. The incident light ray which lands upon the surface is said to be reflected off the surface. The ray that bounces back is called the reflected ray.<u>
</u>
<u>
</u>
<u>
</u>Have a great day and stay safe !