Final vel. : 0
initial vel. : ?
t : 10sec
retar. : 2.5 m/s2
V=U+AT
O = U+ 2.5 *10
U=25 m/s

4

Divyansh Singh answered this

let final velocity be o and initial velocity be u
time = 10 sec
acceleration = -2.5m/s^{2}
according to first formula
v = u + at
where v = 0
u = ?
a = -2.5m/s^{2}
t = 10 sec
v = u + at
0 = u + (-2.5) * 10
0 = u - 25
u = 25 m/s

24

Adithya Raj answered this

Here the initial velocity is 25

1

Sanjay answered this

Using v = u+at formula, initial velocity is 25m/s

-2

Manish Reddy answered this

initial velocity , u=x
final velocity,v=0
time,t=10
retardation due to brakes,a= 2.5m/s2
v=u+at
0=x+(-2.5)(10)
-x=-25
x=25m/s