A student claims that any object in motion must experience a force that keeps it in motion. Do you agree or disagree? Explain your reasoning.
Answers
Answer: agree
Explanation: because there is always a force that causes motion..
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Final answer:
Newton's first law of motion states that an object in motion will continue to move at a constant speed in a straight line unless acted upon by an external force. So, not all objects in motion require a force to keep them in motion.
Explanation:
According to Newton's first law of motion, an object in motion will continue to move at a constant speed in a straight line unless acted upon by an external force. So, it is not true that any object in motion must experience a force to keep it in motion. The force is only necessary to change the object's state of motion, such as slowing it down or altering its direction.
For example, imagine a hockey puck sliding on a frictionless ice rink. Once given an initial push, the puck will continue moving at a constant speed in a straight line until it encounters an external force, such as contact with the boards or another player.
Therefore, I disagree with the student's claim. An object in motion does not necessarily need a force to keep it in motion, but rather a force is required to change its state of motion.
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A 10 kg bear is running to the right at 10 m/s. He crashes into another 10 kg bear running to the left at -5 m/s. They collide and stick together, and move on together at 2.5 m/s. Write at least 2 or 3 sentences explaining whether momentum was conserved in this situation.
How does a walkie talkie transfear to each walkie talkie
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Answer:
Explanation:
The frequency of an electromagnetic wave is given by
where
is the speed of light
is the wavelength
For the light wave in this problem, the wavelength is
So by using the equation above, we find its frequency:
Final answer:
The frequency of light can be found by using the formula f = c ÷ λ, where c is the speed of light and λ is the wavelength. By substituting these values into the formula, you can calculate the frequency of light with a given wavelength.
Explanation:
When you are given the wavelength of light and asked to find its frequency, you would use the formula c = fλ, where c is the speed of light (3.00 x 10⁸ m/s in vacuum), f is the frequency, and λ is the wavelength. To find the frequency, we rearrange this formula to get f = c ÷ λ. Given the wavelength λ = 6.33 x 10^-7 m, we can substitute these values into the rearranged formula to find the frequency:
f = (3.00 x 10⁸ m/s) ÷ (6.33 x 10^-7 m)
By calculating the above equation, you will find the frequency of the light with the given wavelength.
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The magnitude of her velocity with respect to the shore will be 5.70 Km/h. The change of displacement with respect to time is defined as velocity.
What is velocity?
Velocity is defined as the change in displacement with respect to time. The quantity of velocity is a vector quantity. It is a component that is time-based. It is measured in meters per second.
The given data in the problem is;
Q is the magnitude of Velocity of the boat = 4.5 km/hr
P is the magnitude of Velocity of the river flowing = 3.5 km/hr
R is the resultant of velocity P and Q=?
θ is the angle between the two velocities = 90°
From the law of vector addition;
Hence the magnitude of her velocity with respect to the shore will be 5.70 Km/h.
To learn more about the velocity refer to the link;
Answer: The magnitude of her velocity ( v ) with respect to the shore is 5.70 km/h.
Explanation:
Magnitude of Velocity of the boat = Q
Magnitude of Velocity of the river flowing = P
R = Resultant velocity due to velocity of boat and velocity of river.
Applying Law of triangles of vector addition :
From the figure attached:
P = 3.5 k/h, Q = 4.5 km/h
The magnitude of her velocity ( v ) with respect to the shore is 5.70 km/h.
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Q: What happens when cold air approaches a body of warm air? Optional Answers: A. The Warm air rises. B. The warm and cold air both disappear. C. The warm and cold air mix immediately. D. The cold air rises.
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Warm air rises.
EXAMPLE: when your cooking the hot air or warm air rises or moves upward.
Hope I helped.