Mathematics · Kinematics
The displacement x (in m) of four objects A, B, C and D with time t (in s) are given by the following equations: A : xA = 2.7t + 9t2 + 5t3 B : xB = 6.7t2 + 0.9t + 5 C : xC = 10t4 + 9.2t3 + 5.7t D : xD = 0.8t + 1.2t2 + 7.7 Which of them is/are moving with uniform acceleration?
- 1B and D only✓
- 2A and C only
- 3B and C only
- 4B only
Correct answer
B and D only
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