Verified answer

False. When you drive around a corner, you are forced to slow down and some of your inertia becomes a vectorial strain on the axis and wheels of your car. That is the reason why in cars, there has to be a system called differential that makes the wheel closer to the turn rotate slower than the exterior one.

It take power to cause the car to move. We control the car power thru the acellerator. Its impossible to apply the same power continously and have the same energy out put(violation of 2nd law of thermodynamics).

Hence we have power change and the velocity out put is not the same at all times. Hence when the car was driven around the block you would have experienced an average velocity. and you may have gotten a speeding ticket if you exceeded that velocity!Good answer?

False.

Velocity is a vector quantity with two components. One is speed, the other is direction. John can drive around the block at a constant speed, but every time he turns a corner, he changes direction and therefore changes his velocity.

false, by turning around you are changing the direction of velocity , so even though you may be going at constant ¨speed¨the direction is changing , so it isn't constant velocity ( I learnt that in high school..I lost two points for having it wrong :/ ; now I'm getting 2 points from answering, seems fair :P )

Sound wave is termed longitudinal wave via fact it travels longitudinally in the direction to the propagation of the wave.it relatively is a mechanical wave. to offer sound wave there needs a disturbance. such as you spot the waves in the river or in the sea this is using the air flowing at its floor or via indoors disturbance.with a view to assert, while there's a reason there is an result. here Air or inner disturbance is the reason and the result's the wave.further once you strike, as an occasion, strike a metallic pie at its one end and you hear the sound at its different end very relatively.The travelling mode of those waves are longitudinal.To make nevertheless greater, take a chew of wood of which the mid element of it relatively is vertically slit.bypass a protracted piece of thread by using this slit.carry the only end of the string and the different end additionally some physique to hold it. Now get somebody to hold the slit- wood vertically.The string must be somewhat taut .Now the two of one of who's retaining the string can circulate his hand up & down so as that the string(Thread) starts shifting up and down.Now you will see the vibration of the string with waves travelling in the direction of the slit longitudinally.comparable is the case with sound wave. i think of the occasion makes you sparkling how does sound wave propagate.thank you on your question.word: Sound needs medium to commute.It can not commute in vacuum.

Imposssible... If he changes direction turning around, Velocity is not constant...

false