NEET Physics Question - Kinematics

Rankers Physics

Topic: Kinematics

Subtopic: Equations of Motion

A person driving a car with a speed 54 km/h, suddenly sees a boy crossing the road. If the distance moved by car, before the person applies brakes is 5 m, the reaction time of the person is

0.5 sec

0.66 sec

0.33 sec

1 sec

Solution:

Using

$t = \frac{s}{v}$

, with

$v = 54$

km/h = 15 m/s and

$s = 5$

$t = \frac{5}{15} = 0.33 \text{ s}$

Reaction time = 0.33 s.

Solution:

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