The SI unit of angular acceleration is:
Correct answer: A. rad/s2
- A. rad/s2
- B. rad/s
- C. rad.s
- D. rad.s2
Explanation
Option A is correct since angular acceleration is the rate of change of angular velocity of a body and is given by radians/seconds2. Option B is incorrect since it states the unit for the angular velocity of a body. Option C is incorrect since it does not mention the correct units for a quantity. Option D is incorrect since it does not mention the correct units of a quantity.
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About Angular Velocity
Angular velocity describes how quickly angular displacement changes with time, with ω = Δθ/Δt and units of radians per second. Questions relate angular and linear motion through v = rω, use the direction given by the right hand rule, and distinguish angular velocity from angular acceleration and ordinary frequency.
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