Question

A bus and a car moving along a straight road in opposite directions had a head-on collision and both of them came to halt after the collision. if the collision lasts for 2 seconds then which vehicle experiences the greater force of impact?

Answer 1

Answer:

Let mass of truck = M

mass of car = m

velocity of truck = V

then, velocity of car = - V { because both are moving in opposite direction}

external force = 0

we know, according to 2nd Law of motion , if external force is equal to zero then, linear momentum will be conserved.

and also we know, according to 3rd Law of motion " action and reaction are of equal magnitude and directed in opposite directions "

(a) so , according to " 3rd Law of motion ". both experience equal magnitude of force .

(b) due to "conservation of Linear momentum " , both have same change in momentum .

(c) acceleration depends upon mass of body , and it is inversely proportional to mass . so, acceleration of car is greater then truck .

Answer 2

Answer:

Explanation:

refer this

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