Physics - Kinematics Question with Solution | TestHub

PhysicsKinematics1-DMedium2 minQB

PhysicsMediumsingle choice

A car moving with constant acceleration covers two successive kilometers in 30 sec and 20 sec respectively. The acceleration of car is :-

Answer:

Solution:

Average velocity over each kilometer:

$\frac{2 u + 30 a}{2} \times 30 = 1000$

$\Rightarrow 6 u + 90 a = 200$ ...(i)

$\frac{2 u + 80 a}{2} \times 20 = 1000$

$\Rightarrow u + 40 a = 50$ ...(ii)

Solving (i) and (ii): $a = \frac{2}{3} m/ s^{2}$ .

Correct option: (C)

Subject:PhysicsTopic:KinematicsSubtopic:1-D

⏱ 2mℹ️ Source: QB

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