Answer:
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Explanation:
Kinetic energy is energy due to motion. The formula is half the product of mass and velocity squared.
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The mass of the roller coaster car is 2000 kilograms and the car is moving 10 meters per second.
Substitute these values into the formula.
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Solve the exponent.
- (10 m/s)²= 10 m/s * 10 m/s= 100 m²/s²
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Multiply the first two numbers together.
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Multiply again.
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- 1 kilogram square meter per square second is equal to 1 Joule.
- Our answer of 100,000 kg*m²/s² is equal to 100,000 Joules.
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The roller coaster car has <u>100,000 Joules</u> of kinetic energy.
Answer:
A
Explanation:
All of the frictions are the same, but weight always goes straight down so it can only be A or B. Since they are going down a slope, then the normal force must be sloped. A is the only one out of A and B with a sloped normal force, so it has to be A
In physics, spacetime is any mathematical model which fuses the three dimensions of space and the one dimension of time into a single four-dimensional manifold. Spacetime diagrams can be used to visualize relativistic effects, such as why different observers perceive where and when events occur differently.
The answer is b !!!! Hope it helps