Question

A car starts from rest and accelerates uniformly over a time of 7 seconds for a distance of 98meters. Determine the acceleration of the car.
Please answer this question fast and no spams. If u say the answer correctly I will thank your answers and mark u as Brainlist. If u spam then I will report all ur answers which u have answered. This question is from class 9 ch-8 Motion.​

Answer 1

Answer:

For   0<t<4 s  :

Let the acceleration of the particle be  a  ( constant)

Initial velocity of the particle    u=0

Using       S=ut+  

2

1

​  

at  

2

                     

∴   x=0+  

2

1

​  

at  

2

                       ⟹x=  

2

at  

2

 

​  

          for    0<t<4

Thus the x-t graph is parabola symmetric about x axis   for  0<t<4  

Velocity of particle at t=4 s,       v=0+a(4)=4a  m/s

For   t>4 s  :

Acceleration of the particle is zero   i.e  a=0

∴   x=vt=4at             for  t>4 s

Thus x-t graph is a straight line  for  t>4 s

Explanation:

Answer 2

Answer:

i cannot inbox because who answers more thaan 1000

they can only inbox

u r most of the answers are in wanted so mods are taking u r account