A car moves with a uniform speed of 2 m/s in a circle of radius 0.4 m. Its angular speed in rad/sec is:
Correct answer: D. 5
- A. 0.8
- B. 1.6
- C. 4
- D. 5
Explanation
In this question, we are dealing with motion in two dimensions, specifically circular motion. Angular speed (ω) is the rate of change of angular displacement with respect to time. It is calculated using the formula ω=v/r, where v is the linear speed of the object and r is the radius of the circle. Given that the car has a uniform speed of 2 m/s and the radius of the circle is 0.4 m, we can substitute these values into the formula: ω=2 m/s / 0.4 m = 5 rad/sec. Therefore, the angular speed of the car in rad/sec is 5. The incorrect options provide values that do not align with the correct calculation based on the formula provided.
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