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Question
A truck and a car are moving on a rough, level road such that the K.E. associated with them is same. Brakes are applied to both of them simultaneously. Which one will cover a greater distance before it stops?
A truck and a car are moving on a rough, level road such that the K.E. associated with them is same. Brakes are applied to both of them simultaneously. Which one will cover a greater distance before it stops?
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Solution
The correct option is C Both will cover the same distance
Assuming all the conditions the same for both, truck will travel more distance before coming to an halt than car because it has more inertia. In physics, Inertia is a property possessed by a body by virtue of which it tends to oppose to change its state of motion (or of rest). Inertia is directly proportional to mass & velocity of the body. Velocity being the same, truck has more inertia by virtue of its mass. Hence it will travel more distance than car before it stops.
Assuming all the conditions the same for both, truck will travel more distance before coming to an halt than car because it has more inertia. In physics, Inertia is a property possessed by a body by virtue of which it tends to oppose to change its state of motion (or of rest). Inertia is directly proportional to mass & velocity of the body. Velocity being the same, truck has more inertia by virtue of its mass. Hence it will travel more distance than car before it stops.
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