Explanation:
- yes it is the force that is subjected by the force of gravity only
A car has a mass of 900 kg and a truck has a mass of 1800 kg. In which of the following situations would they have the same mome
2 answers:
Answer:
The car travels at twice the velocity of the truck.
Explanation:
As we know that momentum is defined as the product of mass and velocity
so here we know
mass of the car = 900 kg
mass of the truck = 1800 kg
now let say that the speed of car =
speed of truck =
so if the momentum of car and truck is same
so we can say that car will move with double the speed of truck
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To develop the problem it is necessary to apply the kinematic equations for the description of the position, speed and acceleration.
In turn, we will resort to the application of Newton's second law.
PART A) For the first part we look for the time, in a constant acceleration, knowing the speeds and the displacement therefore we know that,
Where,
X = Desplazamiento
V = Velocity
t = Time
In this case there is no initial displacement or initial velocity, therefore
Clearing for time,
PART B) This is a question about the impulse of bodies, where we turn to Newton's second law, because:
F = ma
Where,
m=mass
a = acceleration
Acceleration can also be written as,
Then
Negative symbol is because the force is opposite of the direction of moton.
PART C) Acceleration through kinematics equation is defined as
The gravity is equal to 0.8, then the acceleration is