The student's claim did not follow the scientific method of discovery, hence, it is an opinion not a scientific claim.
<h3>What is the scientific method?</h3>
The scientific method is a procedure employed by scientific towards understanding the world around them as well giving explanation for phenomena in the natural world.
The scientific method involves:
- observations
- asking questions
- putting forward a hypothesis
- testing the hypothesis through experiments
- analyzing results of the experiments and drawing conclusions
- establishing a theory.
Since the student in question just put forward an opinion without testing it out using the scientific method, the statement is not a scientific claim.
Learn more about scientific method at: brainly.com/question/17216882
<h2>The option ( c ) is correct</h2>
Explanation:
When we apply the force on any body , the inertia comes into play . It is the tenancy of the the body to oppose the force which tends to change its state .
In first case the train tries to change its state from rest to motion . Thus the inertia of rest opposes this tendency.
In the second case , the train tries to come from motion to the state of rest . Thus again , inertia opposes it .
Therefore inertia is the factor which creates difficulty in both case . Hence option ( c ) is correct
The horizontal velocity will decrease as it travels.
Hope this helps you!
Answer:
Total weight of the hot tub and water is 5676.6 pounds-force
Explanation:
rho = 62.4lbm/ft^3 × 1ft^3/7.481gal = 8.34lbm/gal
Mass of water = rho × volume = 8.34lbm/gal × 600 gallons = 5004lbm = 5004×0.45359kg = 2269.8kg
Total mass of hot tub and water = 320kg + 2269.8kg = 2589.8kg
Local acceleration due to gravity = 32ft/s^2 = 32ft/s^2 × 1m/3.2808ft = 9.75m/s^2
Total weight of hot tub and water = 2589.8kg × 9.75m/s^2 = 25250.55N = 25250.55/4.4482 lbf = 5676.6 lbf
Inertia. The moon, the Earth, and everything else in the universe has gravity. The difference is inertia. Think of inertia as constant movement, like a hockey puck sliding across the ice. The puck will go in a straight line until another force acts upon it. Now imagine that you hit that hockey puck so hard that it goes fast enough to achieve orbit around the Earth. What is happening to the puck in this case, is that while the puck is going extremely fast, it is also falling towards the Earth. The thing is that the surface of the Earth is curved, so that the puck falls towards the Earth at a rate equal to the curvature of the Earth. The puck then can never hit the Earth as long as it continues at this speed; as long as its INERTIA remains constant. The same is true for the Moon. The Moon is actually falling towards the Earth, but it is going so fast that the rate at which it falls to the Earth is proportional to the curve of its orbit around the Earth. It is helpful to imagine that everything in the universe is moving, all the time.
