well the formula to find speed is distance divided by time and you already have the time so all you need to know to find the average speed of the car is the total distance around the racetrake.
Answer:
When net force of zero acting on a ball which is at rest , then the object center of mass will not accelerate , but the object may begin to rotate .
Explanation:
Here when there is an object where several forces are acing upon are zero then the center of mass will not accelerate because we know that
Where 
acceleration of center of mass
= net force = 0
So the acceleration of center of mass will be zero
But the torque ,may not be zero as torque is product of individual force and perpendicular force .
Since if torque is not equal to zero then the object may begin to rotate
Atmospheric pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth. The standard atmosphere is a unit of pressure defined as 101,325 Pa, which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.
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Hope it helps...</h2>
The law of conservation of energy<span> is a </span>law<span> of science that states that </span>energy<span> cannot be created or destroyed, but only changed from </span>one<span> form into another or transferred from </span>one object to another. In my personal opinion, lets think of a example like this water can produce electricity. Water falls from the sky, converting potential energy to kinetic energy. This energy is then used to rotate the turbine of a generator to produce electricity. In this process, the potential energy of water in a dam can be turned into kinetic energy which can then become electric energy.<span>
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Absorption
Continuous light from the hot, dense core of the Sun passes through the low-density atmosphere, producing an absorption spectrum.
