The displacement x versus time graph is shown below. (A) The average velocity during 0 to 3 s is 10 m / s (B) The average velocity during 3 to 5 s is 0 m / s (C) The instantaneous velocity at t = 2 s

Question

The displacement x versus time graph is shown below.

(A) The average velocity during 0 to 3 s is $10 m / s$
(B) The average velocity during 3 to 5 s is $0 m / s$
(C) The instantaneous velocity at $t = 2 s$ is $5 m / s$
(D) The average velocity during 5 to 7 s and instantaneous velocity at $t = 6.5 s$ are equal
(E) The average velocity from $t = 0$ to $t = 9 s$ is zero
Choose the correct answer from the options given below:

TestHub · Accepted Answer

​ ⟨ v ⟩ = Δ t Δ s ​ = t f ​ − t i ​ S f ​ − S i ​ ​ v = dt ds ​ = slope ​ (A) 0 to 3 sec ; ⟨ v ⟩ = 3 5 − 0 ​ = 5/3 m / s (B) 0 to 5 sec ; ⟨ v ⟩ = 2 5 − 5 ​ = 0 (C) t = 2 ; slope = v = 5 m / s (D) t = 5 to 7 sec ; ⟨ v ⟩ = 2 0 − 5 ​ = − 2.5 m / s At t = 6.5 sec ; v = 10 (E) t = 0 to t = 9 ; ⟨ v ⟩ = 0

Physics - Kinematics 1D Question with Solution | TestHub

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