Question

1 point
15. a car start to move and
acquire the velocity 20 m/s in 4
second find the acceleration of
car.
O 5 m/s^2
5 m/s
4 m/s^2
80 m/s​

Answer 1

★ ANSWER ★

• 5 m/s² (✔)

GIVEN:

• Initial Velocity (u) = 0 [Start from rest]
• Final velocity (v) = 20 m/s
• Time taken (t) = 4 second

TO FIND:

• What is the acceleration of the car ?

SOLUTION:

Let the acceleration of the car be 'a' m/s²

To find the acceleration, we use the formula:-

$\large{\boxed{\bf{\star \: a = \dfrac{v-u}{t} \: \star}}}$

• v = 20 m/s
• u = 0 m/s
• t = 4 sec

According to question:-

On putting the given values in the formula, we get

$\rm{\longrightarrow a = \dfrac{20-0}{4}}$

$\rm{\longrightarrow a = \cancel\dfrac{20}{4}}$

$\bf{\longrightarrow a = 5 \: m/s^2 }$

❝ Hence, the acceleration of the car is 5 m/s² ❞

Answer 2

$\huge\underline{\pink{A}\orange{N}\blue{S}\purple{W}\red{E}\orange{R}}$

5 m/s² (✔)

GIVEN:

Initial Velocity (u) = 0 [Start from rest]

Final velocity (v) = 20 m/s

Time taken (t) = 4 second

TO FIND:

What is the acceleration of the car ?

SOLUTION:

Let the acceleration of the car be 'a' m/s²

To find the acceleration, we use the formula:-

$\large{\boxed{\bf{\star \: a = \dfrac{v-u}{t} \: \star}}} </p><p>$

• v = 20 m/s
• u = 0 m/s
• t = 4 sec

According to question:-

On putting the given values in the formula, we get

$⟶a=\frac {20−0}{4}$

$\rm{\longrightarrow a = \cancel\dfrac{20}{4}}⟶a=$

$\bf{\longrightarrow a = 5 \: m/s^2 }$

❝ Hence, the acceleration of the car is 5 m/s² ❞