Answer:
a) Acceleration while the toboggan is going uphill = 8.85 m/s²
b) Acceleration of the toboggan is going downhill = 4.76 m/s²
Explanation:
Resolving the normal reaction into vertical and horizontal component
Nₓ = mg sin θ
Nᵧ = mg cos θ
The frictional force on the toboggan = Fr = μmg cos θ (note that μ = μ(k) = the coefficient of kinetic friction)
Doing a Force balance on the x component taken in the axis parallel to the inclined plane.
The net force that has to accelerate the toboggan has to match the frictional force acting downwards of the plane (In the opposite direction to motion) and x-component of the Normal reaction
ma = Nₓ + Fr
ma = (mg sin θ) + (μmg cos θ)
a = g[(sin 44°) + (0.29 cos 44°)
a = 9.8(0.6947 + 0.2086) = 8.85 m/s²
b) While coming downhill,
The frictional force is acting uphill now (In the direction opposite to motion),
The force balance is
ma = (mg sin θ) - (μmg cos θ)
a = g[(sin 44°) - (0.29 cos 44°)]
a = 9.8(0.6947 - 0.2086)
a = 4.76 m/s²
Correct option A
The wave speed remains constant.So if the frequency increases then wavelength increases and if frequency decreases then wavelength increases to maintain the constant wave speed.
Hope This Helps You!
Answer:
Weight is a force
Explanation:
Weight is the force of gravity on a mass. It can also be seen through this equation: F=ma, where m is the mass of the object and a is the acceleration of gravity.
Answer:
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<u><em>find the attached solution:</em></u>
Answer:
the answer should be the third statement
