Answer:
The object will travel at the speed of 16 m/s.
Explanation:
Given
To determine
How fast is the object traveling?
<u>Important Tip:</u>
The product of the mass and velocity of an object — momentum.
Using the formula
where
Thus, in order to determine the speed of the object, all we need to do is to substitute p = 64 and m = 4 in the formula
switch the equation
divide both sides by 4
simplify
m/s
Therefore, the object will travel at the speed of 16 m/s.
The car will move in a speed of 45 meter per second
Answer:
2.1 m/s²
Explanation:
By definition, the angular acceleration, is equal to the rate of change of the angular velocity, ω:
α = Δω / Δt (1)
By definition of the angular velocity, we can express the linear velocity, v, as follows:
v = ω*r⇒ Δv = Δω*r (2)
Replacing Δω, from (1) in (2), we get:
Δv = α*Δt*r⇒ Δv/Δt = α*r (3)
By definition of linear acceleration, we can write the following expression;
a = α*r
For a point on the edge of the wheel, the linear acceleration is tangent to the rim, and is equal to the product of the angular acceleration times the distance to the center, which for a point on the edge of the wheel, is just the radius:
⇒ a = 7 rad/sec²*0.3m = 2.1 m/s²
An animal might use more than one type of clue to find its way due to change in the way one mechanism used to work.
Different animals have different senses heightened, that lets them use different mechanisms to navigate. Some of the mechanism include remembering landmarks, solar navigation, star navigation, magnetoreception, olfaction, gravity receptors etc.
For example, a bird using landmark to navigate will find it hard to navigate in the same way again if the landmark has been changed. So it has to depend on other senses such as olfaction or magnetoreception to navigate.
Therefore, an animal might use more than one type of clue to find its way due to change in the way one mechanism used to work.
To know more about Animal navigation
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The law of conservation of mass basically means no atoms are created or destroyed.
This means in a chemical reaction the mass of the PRODUCTS will ALWAYS equal the mass of the REACTANTS
So during reactions atoms are rearranged into different chemicals - chemicals are not 'used up'
It's significant as if scientists know the identities and quantities of reactants for a reaction, they can predict the amount of products that will be made.