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3 years ago

If an object has a negative velocity and a positive acceleration what is the object doing?

Physics

1 answer:

Dmitry_Shevchenko [17]3 years ago

6 0

The object is moving backwards but slowing down.

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An atom contains 15 neutrons and has a mass number of 30. What is its atomic number? How did you determine the atomic number?

irinina [24]

Answer:

Explanation:

The mass number is defined as the total number of protons and neutrons. The atomic number is total number of protons. And since we have the mass number and number of neutrons, we can use simple subtraction (30 - 15) to find that the atomic number is 15.

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3 years ago

Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth?

CaHeK987 [17]

In fact, the force Rahul exerts on Earth corresponds to the force of gravity. But Rahul's weight is, in fact, the force of gravity exerted by the Earth on Rahul, and these two forces correspond to the action-reaction pair of Newton's third law, which states that the two forces are equal.

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3 years ago

Read 2 more answers

Temperatures expressed in the Kelvin scale are ____ higher than temperatures in the Celsius scale?

Cerrena [4.2K]

Answer: D. 273

Explanation: Celsius temperatures can be negative while kelvin goes down to absolute zero and doesn’t go any lower, thus no negative numbers

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2 years ago

We can see our face clearly on mirror why cant we see our face clear on aluminium or irion plate

Alexxandr [17]

Explanation:

this is due to the roughness of the metal like you mentioned aluminum and iron are rough and don't provide a reflective surface as good as a mirror

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3 years ago

2. Another car weighs 2000kg, you can push it .05 m/s?, how much force are you

Vesna [10]

Answer:

$\boxed {\boxed {\sf 100 \ Newtons}}$

Explanation:

We are asked to calculate the force you are applying to a car. According to Newton's Second Law of Motion, force is the product of mass and acceleration. Therefore, we can use the following formula to calculate force.

$F= m \times a$

The mass of the car is 2000 kilograms and the acceleration is 0.5 meters per second squared.

m= 2000 kg
a= 0.05 m/s²

Substitute the values into the formula.

$F= 2000 \ kg \times 0.05 \ m/s^2$

Multiply.

$F= 100 \ kg *m/s^2$

Convert the units. 1 kilogram meter per second squared is equal to 1 Newton. Our answer of 100 kilogram meters per second square is equal to 100 Newtons.

$F= 100 \ N$

You apply <u>100 Newtons</u> of force to the car.

7 0

3 years ago