Answer:
Only the speed is constant.
The acceleration and velocity are changing.
Explanation:
The velocity of an object refers to its speed in a specific direction. Due to the fact that the car is driving in a circle, the direction of the car is changing. This makes the car not to have a constant velocity as this value changes each time the car makes a bend on the circular path. <em>(which is pretty much all the time).</em>
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The acceleration is a direct derivative of the velocity of the car. As a result, if the velocity is changing, the acceleration is also changing.
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Speed is a scalar quantity. This means it does not deal with the direction of the car. It only deals with how fast the car is moving. The car is on cruise control. this means that the speed of the car does not change.
A sphere has reflection symmetry across any plane through its center.
Answer:
Yes, Roberto will have twice the kinetic energy
Explanation:
The equation for kinetic energy is Ke = 1/2(<em>m</em>)v^2
The variable <em>m</em> is not squared by anything, which means it is directly proportional to the equation. If you were to multiply <em>m</em> by 2, it would in turn multiply the entire equation by 2, getting you an outcome with twice as much kinetic energy.
Answer:
1) B
2) B
Explanation:
1) because the relative atomic mass of zinc is 29 and it has a valence electron of 2+ charge.
2) Oxygen because it is has the second highest electronegativity and has a valence electron of-2 charge.
It has been stored in fuels such as coal and oil, formed from the fossilized remains of plants or animals over millions of years.