A toy car has a mass of 5 kg and a speed of 4 m/s. The kinetic energy that is needed is 40 J. The correct option is A.
What is kinetic energy?
Kinetic energy, which may be seen in the movement of an object, particle, or group of particles, is the energy of motion. Any moving item uses kinetic energy, such as a person walking, etc.
There are many types of energy. They are kinetic, potential is the main energy. Kinetic energy is the one that is used when any amount of work is done.
Kinetic energy can be calculated by using the formula
K. E. Is 1/2 x mass x velocity square
The given mass is 5 kg.
Velocity is, v is 4 m/s
Putting the values in the equation
1/2 x 5 x 4 x 4 = 40 joules.
Thus, the correct option is A. 40 J.
To learn more about kinetic energy, refer to the below link:
https://brainly.com/question/17408787
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