Question

. Two trucks, one loaded (A) and the other
unloaded (B)are moving and have same kinetic
energy. The mass of A is double that of B.
Brakes are applied to both and are brought to
rest. If distance covered by A before coming to
rest is s, and that by B is S, then:​

Answer 1

Answer:

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Answer 2

Answer:

S=s

Explanation:

The question misses out telling that the brakes apply equal retarding force.

Now, if F1 is the force applied to A and F2 applied to B,

F1=F2

Find the relation of the deceleration of both the bodies.

Now, we are also given that their kinetic energies are equal so find the relation of the velocity before applying the regarding force.

Final velocities of both are zero.

So use the kinematical equation: v^2= u^2-2aS

Using the relations of accelation and initial velocities, find the relation of the distance.

On solving s=S.