Question

A car starting from rest acquires a velocity of 54 km/h in 2 seconds. Find the acceleration of the car and the distance covered by it.

Answer 1

Answer:

Hope it helps you frnd......

Answer 2

Hey Pretty Stranger!

• Initial Velocity, u = 0 m/s

• Final Velocity, v = 54 km/hr = 15 m/s

• Time, t = 2 seconds

Let's find the acceleration first.

$\sf \: Using \: 1st \: equation \: of \: motion :$

★ v = u + at

→ 15 = 0 + a(2)

→ 15 = 0 + 2a

→ 2a = 15

→ a = 7.5 m/s²

We hafta find the Distance covered now :

$\sf \: Using \: 3rd \: equation \: of \: motion :$

★ v² = u² + 2as

→ (15)² = (0)² + 2(7.5)(s)

→ 225 = 0 + 15s

→ 15s = 225

→ s = 15 m

$\therefore$ Acceleration of the body is 7.5 m/s² and the distance covered by the body is 15 m.