Question

Ahemd is moving i his car with a velocity 20 m/s starting from rest. how much sitance will he cover in 10 sec?

Answer 1

Answer:

Explanation:

Solution,

Here, We have

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

Final velocity, v = 20 m/s

Time taken, t = 10 seconds.

To Find,

Distance covered, s = ?

At first we have to find the acceleration,

According to the 1st equation of motion,

We know that

v = u + at,

So, putting all the values, we get

v = u + at

⇒ 20 = 0 + a × 10

⇒ 20 = 10a

⇒ 20/10 = a

⇒ a = 2 m/s²

Here, the acceleration is 2 m/s².

According to the 1st equation of motion,

We know that

v² - u² = 2as

So, putting all the value, we get

v² - u² = 2as

⇒ (20)² - (0)² = 2 × 2 × s

⇒ 400 = 4s

⇒ 400/4 = s

⇒ s = 100 m

Hence, the distance covered by car is 100 m.