Answer:
Yes we can find the initial velocity of car without finding acceleration.
u = 10 m/s.
Explanation:
Given that
s=20 m
Car takes 4 s to come in rest.
We know that when acceleration is constant then we can apply motion equation
----------1
------2
From equation 1 and 2

So we can say that

Given that the velocity of car at final condition will be zero (v=0)


From the above equation we can find the initial velocity of car without finding the acceleration

u = 10 m/s
Answer:
sound is a type of wave that moves through matter than vibrates our eardrums so we can hear.
Explanation:
Answer:
<em>Newton</em><em> </em><em>'</em><em>s</em><em> </em><em>First</em><em> </em><em>law</em><em> </em><em>of</em><em> </em><em>motion</em><em> </em><em>States</em><em> </em><em>that</em><em> </em><em><u> a body at rest will remain at rest position only and a body which is in motion continues to be in motion </u></em><em><u>until</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>unless</u></em><em><u> </u></em><em><u>any</u></em><em><u> </u></em><em><u>external</u></em><em><u> </u></em><em><u>Force</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>applied</u></em><em><u>.</u></em><em><u> </u></em>
Explanation:
Hope it helps!.
Answer:
Kinetic energy, form of energy that an object or a particle has by reason of its motion. ... Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.
Credits to britannica.com
Explanation:
Hope this helps