If you equate that equation with $F=ma$ and divide both sides by $m$, you get that the car's acceleration in the forward direction is. $$a=g \sin\theta\ -\ g C_{rr}\cos\theta\ - \frac{ \rho v^2 C_D A}{2 m}\ .$$. According to that equation, if $m$ increases, so does $a$.share | cite | improve this answer.f you equate that equation with $F=ma$ and divide both sides by $m$, you get that the car's acceleration in the forward direction is. $$a=g \sin\theta\ -\ g C_{rr}\cos\theta\ - \frac{ \rho v^2 C_D A}{2 m}\ .$$. According to that equation, if $m$ increases, so does $a$. share | cite | improve this answer.
A typical migraine headache lasts less than 24 hours. Less commonly, a migraine can be as brief as 20 minutes or last for weeks. Generally, a migraine sufferer has headache-free periods between attacks. Tension-type headache can persist for days, weeks, or sometimes years. Cluster headaches are very intense but brief, usually lasting 30-90 minutes and repeating two to six times a day during a cluster episode.
Symptoms of tension headaches include: 1  A headache that is constant, not throbbing. 2  You usually feel the pain or pressure on both sides of your head. 3  Pressure that makes you feel like your head is in a vise.4  Aching pain at your temples or the back of your head and neck.ut they can be very painful and hard to live with. Tension headaches can last from 30 minutes to 7 days. If you have a headache on 15 or more days each month over a 3-month period, you may have chronic tension headaches. This type of headache can lead to stress and depression, which in turn can lead to more headaches.