Answer:
a) 0 metres
b) From time 0 s to 10 s , the car was accelerated. Its velocity accelerated from 0m/s to 20 m/s
c) 20 m/s
Explanation:
a) <em>Formula of displacement= velocity x time</em>
time=40 s
velocity =0 m/s
∴ displacement= 0 x 40 = 0 m
Magnitude of displacement is 0 m
b) The increase in velocity shows that there has been acceleration.
c) The average velocity of the car is =
{initial velocity + final velocity}
=
=20
Therefore, the magnitude of the average velocity of the car is 20 m/s
Answer:
b) the height the ball bounces
Explanation:
the control variable is the variable that you change yourself. since you change the height that the ball bounces from we know this is the answer
For energy producing reactions they need Hydrogen atoms, heat, and pressure for the experiments.
<u>Explanation:</u>
The initial step of the Hydrogen combination process: a core of Deuterium (2H) is shaped from two protons with the discharge of an antielectron and a neutrino. In the fundamental Hydrogen combination cycle, four Hydrogen cores (protons) meet up to make a Helium core.
An atomic combination response is characterized as the response wherein at least two lighter cores consolidate together to shape heavier cores with the arrival of high measures of vitality.
Combination can possibly give the sort of baseload vitality expected to give power to our urban communities and our enterprises. Maintainability: Fusion powers are generally accessible and almost limitless.
Answer:
The velocity with which the ball strikes the ground = -5.7 m/s
The velocity with which the ball leaves the ground = 4.3 m/s
Explanation:
Seems like there's parts of a couple questions. I'll focus on the tennis ball part which seems to be a full question.
To find the velocity with which the tennis ball hits the ground, we only need to worry about what happens up to that point. We can ignore the rebound for this part. Given:
d = -1.85
a = -9.8
vi = 0
vf = ?
*Keep in mind that the square root gives us two answers, a positve and a negative one. We use the negative one here because the final speed is downwards and the question says down is negative.
To find the velocity with which the ball leaves the ground, we only need to worry about what happens after that point. We can ignore the drop for this part. Given:
d = 0.947
a = -9.8
vf = 0
vi = ?
*Here we use the positive speed after the square root because we know the ball is going up, which the question designates as the positive direction.
The most common price control is setting a fixed rent price to protect the tenants. There are other alternatives to this price control. Also, price control should be carefully implemented.
Rent regulation is a term that refers to a set of laws that focus on ensuring that individuals have access to rented housing.
The rental regulation system has a principe that is:
- Price controls: Set a rent price and set the increase in a percentage of it (the rent is $ 100 and the annual increase is 5%)
There are alternatives price control such as:
- Price according to the type of property: Set a rental price according to the type of property and its benefits (for example pool, garage, garden, etc)
- Price according to the number of tenants: Set a rental price according to the number of people who will inhabit the property
Generally, tenants are allowed to raise the value of the rent each year by a minimal proportion. This is necessary to avoid that the landlord does not increase the rental value in large amounts because the tenant will not have access to the rented house.
However, governments should be careful with this regulations because they can negative afect the landlord by limiting his rights over the property.
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