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Alekssandra [29.7K]
3 years ago
9

A car has an initial velocity of 9 km/hr and a final velocity of 66 km/hr. What is the cars average velocity? Use one of the fol

lowing to find the answer.

Physics
1 answer:
Karolina [17]3 years ago
7 0

Answer:

velocity of 66 km/hr.

Explanation:

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Why is physics important to everyone? Describe 5 applications of physics in everyday life.
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1. Communication

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2. Transportation

  We can travel from place to anther place by aeroplane , these technologies are introduced after advancement in physics.

3. Construction

 Earlier people used to stay in small houses, now days apartments with many number of storeys are built by considering all the forces coming on the structure.

4. Medical Department

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5. Weather forecasting

 The prediction of weather considering all the available factors, prediction of natural disasters all are application of physics.

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3 years ago
A 6 kg bowling ball moves with a speed of 3 m/s. How fast does a 7 kg bowling ball need to move so that it has the same kinetic
maw [93]

Answer: 7 kg bowling ball must move with a speed of 2.8 m/s so that it has the same kinetic energy.

Explanation:

Kinetic energy is the energy possessed by a body by virtue of its motion.

K.E=\frac{1}{2}mv^2

m = mass of object

v= velocity of the object

K.E=\frac{1}{2}\times 6kg\times (3m/s)^2=27Joules

b) for a 7 kg bowl to have kinetic energy of 27 Joules:

27J=\frac{1}{2}\times 7kg\times v^2

v^2=7.7

v=2.8m/s

Thus 7 kg bowling ball must move with a speed of 2.8 m/s so that it has the same kinetic energy

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Someone who has nostres that are not separated equally has which sensory issue?
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i think B. Deviated septum

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