How does increasing the mass of an object affect its kinetic energy?
A. It decreases the kinetic energy
B. It increases the kinetic energy
C. It has no effect on the kinetic energy
D. It depends on the speed of the object
D. It depends on the speed of the object
Increasing the mass of an object does not directly affect its kinetic energy. The kinetic energy of an object is determined by its mass and its velocity. It is given by the equation KE = 0.5 * mass * velocity^2. Therefore, the effect of increasing the mass on kinetic energy depends on the velocity of the object. Thus, the correct answer is option D: It depends on the speed of the object.
To determine how increasing the mass of an object affects its kinetic energy, we can refer to the equation for kinetic energy. The formula for kinetic energy (KE) is given by:
KE = (1/2) * m * v^2
where m represents the mass of the object and v represents its velocity.
From the equation, we can see that kinetic energy is directly proportional to mass (m) and velocity (v) squared. Therefore, increasing the mass of an object will increase its kinetic energy, given that the velocity remains constant.
So, the correct answer is B. Increasing the mass of an object increases its kinetic energy, assuming the velocity of the object remains the same.
Use the following formula to solve: A 700-kg vehicle is traveling at a speed of 6 m/s. How much kinetic energy does it have?
kinetic energy = 1/2 mass x speed2
A. 12,600 J
B. 50,400 J
C. 700 J
To find the kinetic energy of the vehicle, we can use the formula:
Kinetic energy = 1/2 * mass * speed^2
Substituting the given values:
Mass = 700 kg
Speed = 6 m/s
Kinetic energy = 1/2 * 700 kg * (6 m/s)^2
Kinetic energy = 1/2 * 700 kg * 36 m^2/s^2
Kinetic energy = 0.5 * 700 kg * 36 m^2/s^2
Kinetic energy = 12,600 kg m^2/s^2
Therefore, the kinetic energy of the vehicle is 12,600 joules.
The correct answer is A. 12,600 J.
What type of graph would best illustrate the relationship between kinetic energy and the mass of an object?
Bar graph
Pie chart
Line graph
Scatter plot
Line graph
Which of the following factors affect the kinetic energy of an object?
Color and shape
Temperature and volume
Mass and speed
Height and width