Multiple choice

The displacement of a particle moving along x-axis is given as x = at + bt2 - ct3, where t is time. The respective dimensions of a, b and c are

  1. L2, T, LT2

  2. LT2, LT, LT-2

  3. LT-1, LT-2, LT-3

  4. L, LT, T2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

x = at + bt2 - ct3 [L] = a[T] + b[T2] - c[T3] [a] = LT-1 [b] = LT-2 [c] = LT-3

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