Here are the best answers for each question provided:
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Velocity, acceleration, and momentum are all _____ quantities.
- vector
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A tsunami's _____ is due to the change in its velocity.
- acceleration
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_____ may be expressed in m/s².
- Acceleration
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The acceleration of 9.8 m/s² on any object on earth is caused by the effects of _____.
- gravity
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A roofing nail falls from the top of a house. If the nail took 2 seconds to reach the ground, what formula would you use to find the height of the house, assuming there is no air resistance?
- Height = 0.5 × g × t² (where g = 9.8 m/s², t = time in seconds)
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A tsunami wave hits a stationary shell on the beach with great momentum. After the collision, the shell moves with the wave. The collision is _____.
- inelastic
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Two objects that do not remain in contact after they collide have a(n) _____ collision.
- elastic
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What is the definition of momentum?
- Momentum is determined by multiplying the object's mass by its velocity, or momentum = mass × velocity.
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Two objects collide and travel together after in a(n) _____ collision.
- inelastic
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A change in an object's momentum is due to a(n) _____.
- impulse
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An object's _____ may be expressed in kph or m/s along with its direction.
- velocity
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A force generated by an underwater earthquake applied to oceans waves over a period of time changes the wave's momentum, this is referred to as _____.
- impulse
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On Mar. 11, 2011, a horrific tsunami hit northern Japan and the Fukushima Daiichi nuclear plant, which due to severe damage, emitted radiation. What would be the magnitude of the radiation energy 20 km away compared to the magnitude 1 km away?
- (This question would require more specific details or data to answer accurately.)
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The _____ of the tsunami waves is the product of the wave's mass and velocity.
- momentum
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A change in velocity is _____.
- acceleration
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A flowerpot is knocked off the ledge of a five-story building. What is the height of the ledge if it takes the flower pot 2.75 seconds to hit the ground? Assume there is no air resistance.
- 39.2 m (Using the formula h = 0.5 * g * t² where g = 9.8 m/s² and t = 2.75 s)
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To figure out the gravitational force between the earth and moon, you would use the formula _____.
- (The formula for gravitational force is \( F = G \frac{m1 \cdot m2}{r^2} \), using Newton's law of universal gravitation.)
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A flower pot is sitting on the ledge of a five-story pagoda that is hit hard by a tsunami wave. The force of the wave shakes the pagoda, resulting in the flower pot falling into the sea. The pagoda's height is 37 m and it takes 2.75 s for the flower pot to hit the sea. If the mass of the pot is 2.1 kg, what was the momentum?
- 57 kg-m/s (Final velocity = g * t = 9.8 * 2.75 = 26.95 m/s; Momentum = mass * velocity = 2.1 kg * 26.95 m/s.)
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On Mar. 11, 2011, a horrific tsunami hit northern Japan and the Fukushima Daiichi nuclear plant, which due to severe damage, emitted radiation. Knowing the magnitude of radiation 1 km away, you could calculate the magnitude of the radiation energy 30 km away by using the _____ law.
- inverse-square
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In an energy field, the magnitude or strength of the energy is inversely proportional to the _____ squared.
- distance
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The force of _____ causes an acceleration at the rate of 9.8 m/s².
- gravity
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A leaf and a roofing nail fall from the top of a house. Acceleration due to gravity is equal for both; what would cause the leaf to take longer to reach the ground?
- air resistance
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Two objects in a closed system collide; the _____ momentum is zero.
- net
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A tsunami wave hits a seawall on the beach with great momentum. The seawall withstands the wave and stays in place. The collision is _____.
- inelastic
Let me know if you need further explanations or clarifications!