Answer:
7.8 N
Explanation:
Applying,
I = Ft................. Eqaution 1
Where I = Impulse on the egg test dummy, F = Force on the egg test dummy during the time interval, t = time interval
make F the subject of the equation
F = I/t.................. Equation 2
From the question,
Given: T = -0.39 N.s, t = 0.050 s
Substitute these vales into equation 2
F = -0.39/0.050
F = -7.8 N
Hence the force that act on the egg test dummy is 7.8 N
I believe that the most correct statement about gases is that gases take the shape of the container. This is because gases have an irregular shape unlike solids. Gases is among the three states of matter, they contain particles or molecules which are further apart compared to those of liquids and solids due to weak intermolecular forces of attraction between them.
Its acceleration will be 0.825 m/s²
What is Acceleration ?
Acceleration is the rate of change of velocity. It is measured in m/s²
Given that a car is driving 8.5 m/s, and speeds up to 11.8 m/s over a period of 4 seconds.
The parameters to consider are;
- Initial velocity u = 8.5 m/s
- Final velocity v = 11.8 m/s
a = Δv ÷ t
a = (v - u) / t
a = (11.8 - 8.5) / 4
a = 3.3 / 4
a = 0.825 m/s²
Therefore, its acceleration will be 0.825 m/s²
Learn more about Acceleration here: brainly.com/question/14344386
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Applying the first law of thermodynamics, we know that the heat transferred is equivalent to the work done and the internal energy of the bodies.
In mathematical terms this can be expressed as
According to the statement, the work is carried out on the substance, therefore, the work will be negative (by convention)
Therefore 2700Btu were added as heat to the substance.
The value per unit of mass would be
Therefore it was added around to 54Btu/lbm
Answer:
A. The net force acting on the car from all directions is zero.
Explanation:
According to Newton's first law of motion, an object continues its uniform motion along a straight line, the net force acting on the object will be zero.
To experience a force, the object needs to change its speed or the direction of motion. Unless it experiences any change in the magnitude of speed or direction. The car doesn't experience any force.
If car is moving with a uniform speed in a circular motion. The net force acting on the car is not equal to zero. Since the car is changing its direction constantly, a force called centripetal force is acting on it.
Hence, if the car moves in a straight line, the net force acting on the car from all directions is zero.
