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.
Most people with episodic tension headaches have them no more than once or twice a month, but the headaches can occur more frequently. Chronic tension headaches tend to be more common in females. Many people with chronic tension headaches have usually had the headaches for more than 60-90 days.