Question

A car accelerate uniformly from 18 Kmh-1 to 36 Kmh-1 in 5 seccond, the acceleration is :- A: 5 ms-1 B: 10 m/s C: 1 ms-1 D: 1 ms-2​

Answer 1

Answer:

1 .ms^-1

Explanation:

36 Km/h = 36×5/18 = 10 s

18 Km/h = 18×5/18 = 5s

a = V-U/T = 10-5 / 5 = 5/5 = 1m/s

Oho it's too hard to type .

Hope it helps

Answer 2

Question :-

★ A car accelerate uniformly from $\color{red}{18\:km{h}^{-1}}$ to $\color{red}{36\:km{h}^{-1}}$ in 5 seccond, the acceleration is —

A. $\color{red}{5m{s}^{-1}}$

B. $\color{red}{10m{s}^{-1}}$

C. $\color{red}{1m{s}^{-1}}$

D. $\color{red}{1m{s}^{-2}}$

$\huge\underline{\overline{\mid\star{\frak{\red{♠ Solution ♠:—}}\star\mid}}}$

Here,

• u → $\color{red}{18\:km{h}^{-1}}$ = $\color{red}{5\:m{s}^{-1}}$
• v → $\color{red}{36\:km{h}^{-1}}$ = $\color{red}{10\:m{s}^{-1}}$
• t → 5 seconds

To find :-

~ Acceleration ( a )

We know that ,

$\: \: \: \: \: \: \boxed{ \large \bold{a \: = \frac{v - u}{t} }}$

$\large \bold { \rightarrow \: a \: = \frac{10-5}{5} }$

$\large \bold { \rightarrow \: a \: = \frac{5}{5} }$

$\large \boxed{\bold { \rightarrow \: a \: = 1 \: m {s }^{ - 2} }}$

Answer:- (D)