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Questions in physics

[Answered] What is the mass of a falling rock if it produces a force of 147 N? Given: \[ F = 147 \, \text{N} \] \[ M = ? \] \[ A = 9.8 \, \text{m/s}^2 \]

[Answered] Suppose a force of 100 newtons is used to push an object a distance of 5 meters in 15 seconds. Find the work done and the power for this situation.

[Answered] You are on roller blades on top of a small hill. Your potential energy is equal to 1,000.0 joules. The last time you checked, your mass was 60.0 kilograms. a. What is your weight in newtons? b. What is the height of the hill? c. If you start skating down this hill, your potential energy will be converted to kinetic energy. At the bottom of the hill, your kinetic energy will be equal to your potential energy at the top. What will be your speed at the bottom of the hill?

[Answered] How many newtons of force are represented by the following amount: [tex]3 \, \text{kg} \cdot \text{m/s}^2[/tex]?

[Answered] Why don't the present shapes of the continents fit perfectly into the supercontinent?

[Answered] How are work, force, and distance related?

[Answered] Two billion people jump up in the air at the same time with an average velocity of 7.0 m/s. If the mass of an average person is 60 kilograms and the mass of Earth is [tex]$5.98 \times 10^{24}$[/tex] kilograms: a. What is the total momentum of the two billion people? b. What is the effect of their action on Earth?

[Answered] Calculate the force between one grapefruit and Earth. Earth has a mass of [tex]5.9742 \times 10^{24} \text{ kg}[/tex] and a radius of [tex]6.3710 \times 10^{6} \text{ meters}[/tex]. Assume the grapefruit is resting on Earth’s surface.

[Answered] The Lamborghini Diablo sports car can accelerate from 0.0 km/hr to 99.2 km/hr in 4.0 seconds. What is the acceleration of this car? Give your answer in units of kilometers per hour per second.

[Answered] Is the following sentence true or false? The faster the particles of a substance are moving, the more energy they have.