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ANTONII [103]
3 years ago
10

Speed is velocity in a given direction O True O False

Physics
2 answers:
Zarrin [17]3 years ago
8 0

Answer:

FALSE

Explanation:

Velocity = speed with direction.

Think of speed and direction like rockets and missiles. Rockets are not smart. Missiles are smart. Rockets go in one direction. Missiles can track their targets, they have a specific destination, a specific direction.

Velocity is often used in physics, because its almost useless to know how fast an object is going if you don't know which direction it is going.

Think of it like this. If the Weather man told you a hurricane was traveling at 30 miles an hour, but didn't tell you which direction it was going, you would have no idea where to run, or if it was going to hit you at all. However, if he told you it was going 30 miles an hour to the North, and you were West of it, you would be fine, and wouldn't have to worry.

irinina [24]3 years ago
5 0
False. speed equals velocity
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A rocket burns fuel to create hot gases that explode violently out of the rocket engine. This explosion creates thrust. Thrust i
Lerok [7]

Answer:

Thrust due to fuel consumption must overcome gravitational force from the Earth to send the rocket up into space.

Explanation:

From the concept of Escape Velocity, derived from Newton's Law of Gravitation, definition of Work, Work-Energy Theorem and Principle of Energy Conservation, which is the minimum speed such that rocket can overcome gravitational forces exerted by the Earth, and according to the Tsiolkovski's Rocket Equation, which states that thrust done by the rocket is equal to the change in linear momentum of the rocket itself, we conclude that thrust due to fuel consumption must overcome gravitational force from the Earth to send the rocket up into space.

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2 years ago
Technician A says mechanical efficiency is a comparison between brake horsepower and indicated horsepower. Technician B says vol
Reil [10]

Answer:Both are correct

Explanation:

Both are correct because

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8 0
3 years ago
How many newtons of force are represented by the following amount: 3 kg·m/sec^2?
HACTEHA [7]

1 newton is the force that accelerates
1 kilogram of mass at the rate of 1 m/s² .

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4 0
3 years ago
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4 0
3 years ago
We are trying to reduce the current time of 15s by 30% but this leads to an increase of 18% in the CPI. For each processor, what
PilotLPTM [1.2K]

Answer:

Explanation:

For reduction

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Therefore

P1 CPI = CPI x 1.18

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P3 CPI = CPI x 1.18

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P3: (Instructions x P2CPI) /0 .7

5 0
3 years ago
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