Question

A body starts from rest and acquires a velocity 180m/s in 0.05h.Find the acceleration​

Answer 1

u =0 m/s (body starts from rest)

v = 180 m/s

t =0.05h=180s

Using first equation of motion,

v=u+at

a = tv−u

   =  180180−0

    =1s2m

Answer 2

PHYSICS

Acceleration

Answer:

Initial velocity, u = 0 m/s

Final velocity, v = 180 m/s

Time taken, t = 0.05 hours = 3min = 180 seconds

Acceleration, a = $\frac{v-u}{t}$

Substituting the values,

a = $\frac{180-0}{180}$ = $\frac{180}{180}$ = 1.

Therefore, the acceleration of the body is $1m/s^{2}$.

Facts

✔ Acceleration is defined as the rate of change of velocity with time. Its SI unit is $m/s^{2}$.

✔ Velocity is speed with direction.

✔ Negative acceleration is known as retardation.

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