Kinematics - NEET Physics Questions
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Kinematics

Practice Questions:
Question 221: easy

A car is moving with velocity of \( 20\text{ m/s} \) on a straight road. A scooterist wishes to overtake the car in \( 60\text{ s} \). If the car is at a distance of \( 1.5\text{ km} \) ahead, then the velocity with which the scooterist has to chase the car is

1. \( 25\text{ m/s} \)
2. \( 20\text{ m/s} \)
3. \( 45\text{ m/s} \)
4. \( 50\text{ m/s} \)
View Answer

Relative velocity required: \( v_{\text{rel}} = \frac{\text{distance}}{\text{time}} = \frac{1500\text{ m}}{60\text{ s}} = 25\text{ m/s} \). Since \( v_{\text{rel}} = v_s - v_c \), we get \( v_s = v_c + v_{\text{rel}} = 20 + 25 = 45\text{ m/s} \).

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Question 222: easy

Two particles A and B are projected from ground at an angle of \( 30^\circ \) with the horizontal with velocity \( 20\text{ m/s} \) and \( 40\text{ m/s} \) respectively. The maximum height and time of flight are both greater for which particle?

1. A
2. B
3. Same for both
4. Data insufficient
View Answer

Maximum height \( H \propto u^2 \) and Time of flight \( T \propto u \) for a given angle. Since particle B has a larger initial velocity, both parameters are greater for B.

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