Question

The speed of a body moving along a straight path
changes 5m/s to 10m/s
in 5 sec. Find the deceleration.​

Answer 1

Given, initial velocity, u= 5m/s

final velocity , v =10m/s

time , t = 5sec

we know,

a=v-u/t

a=10-5/5

a=5/5 =1

a = 1m/sec^2

Answer 2

Solution:-

Given,

• Speed of a body moving along a straight path  changes 5m/s to 10m/s in 5 sec.

We can find the acceleration by using the first equation of motion:-

u = 5m/s ; v = 10m/s ; t = 5sec

➣ v = u + at

➣ 10 = 5 + 5a

➣ 10 - 5 = 5a

➣ 5a = 5

➣ a = 5/5

➣ ${\bf{\color{yelow}{ \: a \: = \: 1m/s² \: }}}$

∴ The acceleration of body is 1m/s²