Question

A car is traveling at 114 m/s and changes its velocity to 77 m/s in 9 sec.

What is the car's acceleration?

Answer 1

Given -

• Initial Velocity, u = 114 m/s
• Final velocity, v = 77 m/s.
• Time taken, t = 9 sec.

To find -

• Acceleration of the car.

Solution -

Here, using the equation of motion v = u + at we can find the acceleration easily.

★ Here,

1. V = Final velocity
2. U = Initial Velocity
3. A = Acceleration
4. T = Time.

Substituting the values -

→ 77 = 114 + a(9)

→ 9a = 114 - 77

→ 9a = 37

→ a = 37/9

→ a = 4.1 m/s

Therefore, the acceleration of the car will be 4.1 m/s.