Answer :
Answer:
The greater the kinetic energy of a car, the longer it takes for the car to stop.
If the speed of a car doubles, the car’s kinetic energy and braking distance quadruple.
Explanation:
The kinetic energy is given by the formula,
½ mv²
where m is the mass and v is the velocity.
So when the velocity or speed doubles the kinetic energy will quadruple.
A car moving with high kinetic energy has a high speed or velocity therefore it is going to take more time to reduce the higher speed and bring the car to a halt.
Answer: C. If the speed of a car doubles, the car’s kinetic energy and braking distance quadruple. And A.The greater the kinetic energy of a car, the longer it takes for the car to stop.
