Physics, asked by newsimran2010, 9 months ago

if car is moving
with constant velocity v then
find work done by friction force , normal force gravity

Answers

Answered by aakanshasingh023

Explanation:

Apply force to an object, and its velocity changes. This does not work the other way around -- you cannot apply velocity to an object and change its force. Velocity does not act on an object. A force pushes or pulls on an object, but velocity is simply something an object has.

Answered by BrainlyNisha001

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When a car skids to a stop, the work done by friction upon the car is equal to the change in kinetic energy of the car. Work is directly proportional to the displacement of the car (skidding distance) and the kinetic energy is directly related to the square of the speed (KE=0.5*m*v2). For this reason, the skidding distance is directly proportional to the square of the speed. So if the speed is tripled from 40 km/hr to 120 km/hr, then the stopping distance is increased by a factor of 9 (from 20 m to 9*20 m; or 180 m).

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if car is moving
with constant velocity v then
find work done by friction force , normal force gravity