Question

a car starting from rest moves with constant acceleration of 2.0 m/s2 from 10 s.calculate velocity after 10 s​

Answer 1

GIVEn

a car starting from rest moves with constant acceleration of 2.0 m/s²

TO FINd

Calculate velocity after 10 s

SOLUTIOn

• a = 2.0m/s²
• u = 0 {car started from rest}
• t = 10s
• v = ?

Apply this formula

$\Large{\boxed{\boxed{a =\dfrac{v - u}{t}}}}$

$\implies\tt 2 =\dfrac{v-0}{10} \\ \\ \\ \implies\tt 2 = \frac{v}{10} \\ \\ \\ \implies\tt v = 20m/s$

Therefore, the final velocity of car is 20m/s

Answer 2

Answer:

Explanation:

Given :-

Initial velocity, u = 0 (As car starts from rest)

Acceleration, a = 2 m/s²

Time, t = 10 seconds

To Find :-

Final velocity, v = ??

Formula to be used :-

1st equation of motion, ie v = u + at

Solution :-

Putting all the values, we get

v = u + at

⇒ v = 0 + 2 × 10

⇒ v = 0 + 20

⇒ v = 20 m/s

Hence, final velocity of car is 20 m/s.

Terms related to the topic :-

Acceleration - Acceleration of a body is defined as the rate of change of velocity. Acceleration has both magnitude and direction, hence it is a vector quantity.