Two toy cars A and B of masses 500g and 200g respectively are moving with same speed. Which of the two have greater kinetic energy? (explain how)
Answers
The kinetic energy of a body can be expressed as
K.E = 1/2 mv ²
Where m = mass of the body
v = velocity of the body.
Explanation
The two toy-cars A and B of masses 500g and 200 g respectively are moving with the same speed.
So, their kinetic energy will be-
K.E ∝m (as their speed is same)[The kinetic energy is directly proportional to the mass of the car]∴The toy-car with more mass will have more kinetic energy than the toy-car with smaller mass.
Final answer
The toy-car A ( 500g) will have more kinetic energy than the toy-car B (200).
Because the kinetic energy is directly proportional to the mass of the body.
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Answer:
The kinetic energy of a body can be
expressed as
K.E = 1/2 mv ²
Where m = mass of the body
v = velocity of the body.
Explanation
The two toy-cars A and B of masses 500g and 200 g respectively are moving with the
same speed.
So, their kinetic energy will be K.E am (as their speed is same) [The kinetic energy is directly proportional to the mass of the car]. The toy-car with more mass will have more kinetic energy than the toy-car with smaller mass.
Final answer
The toy-car A (500g) will have more kinetic energy than the toy-car B (200). Because the kinetic energy is directly proportional to the mass of the body.