5
Question
Oil is dripping on the road at a constant rate from a moving car as shown. Which of these graphs correctly describes the car’s motion?
Oil is dripping on the road at a constant rate from a moving car as shown. Which of these graphs correctly describes the car’s motion?
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Solution
The correct option is B
As oil is dripping at a constant rate, it means oil is dropping at equal intervals of time.
But the gap between oil drops keeps decreasing; it means the displacement covered by the car is decreasing in equal intervals of time.
From the figure, the gap between oil drops keeps decreasing. That means displacement covered by the car is decreasing in equal intervals of time.
In options A and B , the car is in uniform motion i.e car covers equal displacement in equal intervals of time.
In option C car is in non uniform motion but the displacement covered by the car is increasing in equal intervals of time.
As oil is dripping at a constant rate, it means oil is dropping at equal intervals of time.
But the gap between oil drops keeps decreasing; it means the displacement covered by the car is decreasing in equal intervals of time.
From the figure, the gap between oil drops keeps decreasing. That means displacement covered by the car is decreasing in equal intervals of time.
In options A and B , the car is in uniform motion i.e car covers equal displacement in equal intervals of time.
In option C car is in non uniform motion but the displacement covered by the car is increasing in equal intervals of time.
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