A car weighs 1323 N. what is its mass?
2 answers:
Answer:
Mass of the car, m = 135 kg
Explanation:
The weight of the car is 1323 N. Let m is its mass. The relation between the mass and weight comes form Newton's second law of motion. We know that the weight of an object is the force that is exerted due to acceleration due to gravity.
The mathematical form of weight of an object is given by :
W = mg
g is the acceleration due to gravity
m = 135 kg
So, the mass of the car is 135 kg. Hence, this is the required solution.
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Explanation:
The kinetic energy is said to be possessed due to the motion of the object. An object at rest will have zero kinetic energy and if it is in motion it will have some kinetic energy. The mathematical expression for kinetic energy is given by :
...........(1)
Where
m is the mass of the object
v is the velocity of object
It is clear form expression (1) that the kinetic energy of the object is directly proportional to the mass and velocity of an object.
So, the hypothesis for the mass and kinetic energy can be written as " when the mass of the object increases, its kinetic energy also increases because there exists a direct relationship between the mass and the kinetic energy of the object".
So the answer is option b.