Question

a car accelerates uniformly from 18km/he to 36km/he in 5 mins
a)5m/s^2 b)1km/s^2 c)216m/s^2 d)216km/h^2​

Answer 1

Correct question:

a car accelerates uniformly from 18km/he to 36km/he in 5 mins,

a)5m/s² b)1m/s² c) 216m/s² d)216km/h

To Find :-

• Acceleration of a car.

Solution :-

• Initial velocity (u) = 18 km/h ⟶ 18 × 5/18 ⟶ 5 m/s.

• Final velocity (v) = 36 km/h ⟶ 36 × 5/18 ⟶ 10 m/s

• Time (t) = 5 min

Applying 1st equation of motion,

$\red\bigstar$ v = u + at

[ Put the values ]

$\longrightarrow$ 10 = 5 + a × 5

$\longrightarrow$ 10 = 5 + 5a

$\longrightarrow$ 10 - 5 = 5a

$\longrightarrow$ 5 = 5a

$\longrightarrow$ a = 5/5

$\longrightarrow$ a = 1 m/s² $\green\bigstar$

Therefore,

Acceleration of a car is 1 m/s².

Answer 2

Answer:

$\huge \bf \: question$

a car accelerates uniformly from 18km/hours to 36km/hour in 5 mins

a)5m/s^2 b)1km/s^2 c)216m/s^2 d)216km/h^2

$\huge \bf \: formula \: used$

$\blue \star {V \: = \: u \: + \: at}$

$\huge \bf \: soltution$

$10 = 5 + a \times 5$

$10 = 5 + 5a$

$10 - 5 = 5a$

$5 - 5a$

$a = 1$

So, the acceleration of car is 1 m/s.