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“A test projectile is fired horizontally into a viscous liquid with a velocity u.The retarding force is propotional to the square of the velocity, so that the acceleration becomes a=-k(v)^2 .v is the velocity at that point. Derive expressions for the distance D travelled in the liquid and corresponding time t required to reduce the velocity to u/2.
Neglect any vertical motion”
CAN YOU ANSWER?
A lorry and a car moving with the same KE are brought to rest having same retarding force .which one of them should come at rest at shorter distance.
According to Work Kinetic Energy theorem
Both should stop travelling the same distance
(This was a quick answer without a deep thought. If the readers have a diffrent opinion, please comment)