Solved: PHYSICS Question for NEET

NEET PHYSICSEasy

A car turns at a constant speed on a circular track of radius $100 \text{ m}$ , taking $62.8 \text{ s}$ for every circular lap. The average velocity and average speed for each circular lap, respectively, is:

0, 0

0, 10 m/s

10 m/s, 10 m/s

10 m/s, 0

Step-by-Step Solution

Average Velocity: Average velocity is defined as the ratio of total displacement to the total time interval ( $v_{avg} = \Delta x / \Delta t$ ) . For one complete circular lap, the car returns to its initial position. Therefore, the net displacement $\Delta x$ is zero. Consequently, the average velocity is zero.
Average Speed: Average speed is defined as the ratio of the total path length to the total time interval . The path length for one lap is the circumference of the circle, $2\pi R$ .
Calculation:

Radius $R = 100 \text{ m}$ .
Time $t = 62.8 \text{ s}$ .
Path Length = $2\pi R = 2 \times 3.14 \times 100 = 628 \text{ m}$ .
Average Speed = $\frac{628}{62.8} = 10 \text{ m/s}$ .

Conclusion: The average velocity is 0 and the average speed is $10 \text{ m/s}$ .

Practice Mode Available

Master this Topic on Sushrut

Join thousands of students and practice with AI-generated mock tests.

Get Started