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AysviL [449]
3 years ago
13

A car is traveling West on Old Milton Parkway at 100 km/hr when the driver spots a police cruiser in the bushes. The driver hits

the brakes and the velocity of the car is reduced to 80 km/hr. How would you describe the acceleration of the car and driver? (Assume east is the positive direction).
The car had negative acceleration with velocity in the positive direction

A)The car had positive acceleration with velocity in the negative direction

B)The car experienced positive accelerationwith velocity in the negative direction

C)The car experienced negative acceleration with velocity in the positive direction.
Physics
1 answer:
Alisiya [41]3 years ago
5 0

The answer is option C) The car experienced negative acceleration with velocity in the positive direction.

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The picture given here shows part of a skating track inside a campus. Children who are roller-skating come from both directions
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Answer: 7

Explanation: 7 is the superior number

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The speed of sound I gases depends on <br> a humidity <br> b air<br> c temperature <br> d visibility
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The speed of sound in gases is represented mathematically as:

v(sound)  = √γRT/M

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M = molar mass of the gas

Hence, the speed of sound in gas is directly proportional to the square root of temperature.

Ans: c) temperature

4 0
3 years ago
Select the correct answer.<br> Which type of energy is thermal energy a form of
elena-s [515]
Kinetic energy. thermal energy (a low form of energy ) is a form of kinetic energy as it is produced as a result of motion of particles either if they vibrate at their position or they move along longer paths. Motion produces friction or resistance which leads to excitation and thus the heat is produced. The higher the motion of the particles, the higher would be the thermal energy.
7 0
3 years ago
Which statement describes a scientific theory?
Mekhanik [1.2K]

Answer:

A theory changes based on new observations and testing.

Explanation:

The first statement here refers to a law. A law states how something behaves without providing an explanation to such observations.

Scientific theories are explanation into a phenomenon. They give reasons to why certain patterns are noticeable.

They are based on multiple tests and validation of a hypothesis. By so doing, they can be changed based on new observations and testing.

6 0
3 years ago
Maria does 500 Newton-meters of work moving books from one table to another. The total force is 100 Newtons. How far were the bo
Mazyrski [523]

The displacement of the book is 5 meters

Explanation:

The work done by a force when moving an object is given by:

W=Fd cos \theta

where :

F is the magnitude of the force

d is the displacement

\theta is the angle between the direction of the force and the displacement

In this problem, we have:

W = 500 J is the work done by Maria

F = 100 N is the force applied by Maria

\theta=0^{\circ}, assuming the direction of the force is parallel to the displacement

So we can rearrange the equation to solve for d, the displacement:

d=\frac{W}{F cos \theta}=\frac{500}{(100)(cos 0)}=5 m

So, the book was moved 5 meters.

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

5 0
3 years ago
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