NEET Physics Question - Kinematics

Rankers Physics

Topic: Kinematics

Subtopic: Equations of Motion

A car travelling with a velocity of 90 km/h slowed down to 54 km/h in 15 s. The retardation is

0.67 m/s²

1 m/s²

1.25 m/s²

1.5 m/s²

Using the formula $a = \frac{v_f - v_i}{t}$ :

Converting to m/s:
$90$ km/h = $25$ m/s, $54$ km/h = $15$ m/s.

$a = \frac{15 - 25}{15} = \frac{-10}{15} = -0.67 \text{ m/s}^2$

Retardation = 0.67 m/s².