It will eventually wear down the rock due to hydraulic action and etc
Answer:
D
Explanation:
Change in speed or direction is acceleration
Answer:
Speed and velocity both measure an object’s rate of motion. However, speed is a scalar quantity, which means that it can be described with a numerical value. Velocity is a vector quantity, which depends on direction as well as magnitude. Read these definition for more information:
speed - the rate of distance traveled by a moving object over time
velocity - the rate of displacement of a moving object over time
Basically, an object’s speed tells you how fast it’s going. Its velocity tells you how fast it’s going in a certain direction. You use speed measurements in your daily life, but physicists depend on velocity measurements more frequently in their work.
Explanation:
<span>An atom’s emission of light with a specific amount of energy confirms that </span><span>electrons emit and absorb energy based on their position around the nucleus.
The light emitted from an electron is a result of the electron's quantum jumps/leaps ( atomic electron transitions ) to and from different energy levels.</span>
As , Fr = m.a
With mass in kg
We have:
m = 220g
m = 0,22kg
We have too:
a = -0,205m/s^2 i + 0,400m/s^2 j
Remembering that "a" is in vector
a = axi + ayj
a = √( ax^2 + ay^2)
a = √( (-0,205)^2+(0,400)^2 )
a = √( 0,202025)
a ~ 0,449 m/s^2
Then,
Fr = m.a
Fr = 0,22 . 0,449
Fr ~ 0,09888 N
Fr ~ 9,88 . 10^(-2) N