Answer:
Explanation:
Kinetic energy is the energy an object possesses due to motion. It is calculated with the following formula.
The mass of the object is 4.7 kilograms. The velocity of the object is 7 meters per second.
Substitute the values into the formula.
Solve the exponent.
- (7 m/s)²= 7 m/s * 7 m/s = 49 m²/s²
Multiply the numbers together.
Convert the units. 1 kilogram square meter per square second is equal to 1 Joule.
The object has <u>115.15 Joules</u> of kinetic energy.
Answer:
The car is decelerating and its acceleration is negative.
Explanation:
First thing to consider. The car traveling direction is not important to answer the question.
Second, there are two affirmations on each sentence. So, lets take definitions:
Deceleration: Reducing the acceleration, from one value to another. No matter if the acceleration for the moment is positive or negative.
Acceleration negative: the driver is applying a force to make speed=0, the sign of this force must negative in order for the car to stop, other way it will go faster. Acceleration is the change rate of speed, if the speed is going down, the total acceleration until cars stops must be negative.
Formula of the gravitational force between two particles:
where
is the gravitational constant
m1 and m2 are the masses of the two particles
r is their distance
(a) particle A
The gravitational force exerted by particle B on particle A is
to the right
The gravitational force exerted by particle C on particle A is
to the right
So the net gravitational force on particle A is
to the right
(b) Particle B
The gravitational force exerted by particle A on particle B is
to the left
The gravitational force exerted by particle C on particle B is
to the right
So the net gravitational force on particle B is
to the right
(c) Particle C
The gravitational force exerted by particle A on particle C is
to the left
The gravitational force exerted by particle B on particle C is
to the left
So the net gravitational force on particle C is
to the left
I believe it is because the salt supports the weight of the egg
Answer
hawk maintains a consistent internal temperature in both the heat of the day and the cool of night this is called as endothermy.
Endothermy also known as warm-bloodedness is defined as the ability of an animal, bird or organism to produce heat and conserve it to maintain a consistent internal temperature.
