A car that travels from point A to point B in four hours, and then from point B back to point A in six hours. The road between point A and point B is perfectly straight, and the distance between the two points is 240 km. What is the car’s average velocity?
Answers
1. If we would like to find the velocity, we must calculate the distance from initial to final,
2. If we would like to find the speed, we must calculate the total distance that travelled (
So, in this question, because it return back to its initial point so (delta)x = 0, so average velocity is 0 m/s.
If you mean average velocity, it is 0/10 = 0 km/h
Related Questions
Evelyn learns that a sound wave can be recorded electronically as an analog signal or as a digital signal. She investigates these two signal types. She records her voice using a tape recorder, which uses an analog signal to produce sound when played back. She also records her voice using a computer, which uses a digital signal to produce sound when played back. Evelyn replays each recording 100 times.a. Describe a difference that Evelyn would most likely hear between the two recordings after being replayed 100 times.b. Explain why the two recordings would sound different after being replayed 100 times.
Select all of the answers that apply. To do your part during a drought, you should _____.A) take extra long showersB) fix leaky faucetsC) overwater your lawnD) let the water run while you brush your teethE) use a broom to sweep your driveway ins
Sheena wants to measure the volume of a ball that is 24 cm across how should she set up her equation?
The wavelength of a given region of the electromagnetic spectrum ranges from 1 x 10-11 - 1 x 10-8 meters. Which waves are found in this region?A) gamma rays B) x-rays C) micro waves D) radio waves
Answers
Answer:
1.8 MJ
Explanation:
PE = mgh
PE = (1500 kg) (3.7 N/kg) (324 m)
PE = 1,798,200 J
PE = 1.8 MJ
Answers
c. drawing
b. sketching
d. acting
Answers
Answer:
D
Explanation:
Right on edge2020
Answers
The Tiger has a mass of 34 Kg and runs with a speed of 8.5 m/s, the Connecticut Energy of the tiger 289 Kg m/s.
What is meant by Momentum?
The momentum of an object is defined as the product of mass and velocity of the object.
Mathematically, the momentum of an object is given as;
P = mv
where;
m is the mass of the object
v is the velocity of the object
The principle of conservation of linear momentum states that the total momentum of an isolated system is always conserved.
That is the sum of initial momentum of the system is equal to the sum of the final momentum of the system.
Mass of tiger , m = 34 kg .
Velocity of tiger , v = 8.5 m/s .
Substituting the above values in given formula,
P = mv
= 34 × 8.5
= 289 Kg m/s.
The Connecticut Energy of the tiger 289 Kg m/s.
Learn more about Momentum,
#SPJ2
Answer:
The kinetic energy of the tiger is 1228.25 J.
Explanation:
KE=1/2m*v^2
m=34
v=8.5
KE=1/2*34*8.5^2
KE=17*72.25
KE=1228.25 J
Answers
Answer:
Explanation:
The moment of inertia is the integral of the product of the squared distance by the mass differential. Is the mass equivalent in the rotational motion
a) True. When the moment of inertia is increased, more force is needed to reach acceleration, so it is more difficult to change the angular velocity that depends proportionally on the acceleration
b) True. The moment of inertia is part of the kinetic energy, which is composed of a linear and an angular part. Therefore, when applying the energy conservation theorem, the potential energy is transformed into kinetic energy, the rotational part increases with the moment of inertia, so there is less energy left for the linear part and consequently it falls slower
c) True. The moment of inertial proportional to the angular acceleration, when the acceleration decreases as well. Therefore, a smaller force can achieve the value of acceleration and the change in angular velocity. Consequently, less force is needed is easier
Final answer:
d. The lower the moment of inertia, the slower something will roll down an incline - this is the option that is NOT true. Objects with lower moments of inertia roll down inclines faster, not slower because they resist changes to their rotation less.
The correct statement that is NOT true among the provided options is: d.
Explanation:
The correct statement that is NOT true among the provided options is: d. The lower the moment of inertia, the slower something will roll down an incline.
The moment of inertia, often denoted by 'I', is essentially the rotational equivalent of mass for linear motion. It is a property of a body that measures its resistance to angular acceleration, which is its change in angular velocity.
- a. True - The higher the moment of inertia, the greater the resistance to changes in angular velocity, because a body with a larger moment of inertia (mass concentrated farther from the axis of rotation) requires more torque to change its rotational speed.
- b. True - The higher the moment of inertia, the slower something will roll down an incline. This is because an object with a greater moment of inertia will resist rolling down the incline more than one with a lower moment of inertia.
- c. True - The lower the moment of inertia, the easier it is to change the angular velocity, as there is less mass resisting the change in rotation.
However, the claim in statement d is not correct as per the principles of rotational motion in physics. An object with a lower moment of inertia would actually roll down an incline faster, not slower, given the same amount of gravitational potential energy, since it has less resistance to changes in its rotational motion.
Learn more about Moment of Inertia here:
#SPJ3