when you are travelling downhill on a roller coaster, you experience a light felling in your stomach because, at the time of travelling downhill for a very little duration the roller coaster is falling freely on the earth, and for that time period there is no gravity works on you, and you feel the condition of weightlessness that's why you feel light in your stomach.
Answer:
The magnitude of the velocity is approximately 11.45 units
Explanation:
Since they give us the x and y components of the vector velocity, we can find its magnitude via the Pythagorean theorem:
Answer:
(d) a net external force must be acting on the system
Explanation:
Momentum is given as the product of mass and velocity.
P = MV
According to Newton's second law of motion, " Force applied to a body (system) is directly proportional to the rate of change of momentum of the body (system) which takes place in the direction of the applied force (external force).
F ∝ΔMV
Therefore, If the total momentum of a system is changing, a net external force must be acting on the system.
(d) a net external force must be acting on the system
Answer:
Yes
Explanation:
I've done plenty of research by hitting myself repeatedly. It does hurt after awhile.
Answer:
6 rad/s
Explanation:
In a spring the angular frequency is calculated as follows:
where is the angular frequency, is the mass of the object in this case , and is the constant of the spring.
To calculate the angular frequency, first we need to find the constant which is calculated as follows:
Where is the force: , and is the distance from the equilibrium position: .
Thus the spring constant:
And now we do have everything necessary to calculate the angular frequency:
the angular frequency of the oscillation is 6 rad/s