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What are the five SI base quantities and their units tested on the MCAT? Length
(m), mass (kg), time (s), current (A), temperature (K). MCAT_Physics::Units
Express a Newton, a Pascal, and a Joule in base SI units. \(N = kg\cdot m/s^2\), \
(Pa = N/m^2\), \(J = N\cdot m\). MCAT_Physics::Units
1 atm equals how many Pa and how many mmHg? 1 atm = 101,325 Pa ≈ 1×10⁵ Pa = 760
mmHg. MCAT_Physics::Units
How many joules in one calorie? 1 cal = 4.184 J. MCAT_Physics::Units
Why check units before trusting a calculated answer? Mismatched units mean an
arithmetic error occurred — it's the fastest way to eliminate wrong answer choices.
MCAT_Physics::Units
What's the fastest way to simplify an ugly number on a no-calculator exam?
Convert to scientific notation first, then handle the digits and exponent
separately. MCAT_Physics::Units
Give the three constant-acceleration kinematics equations. \(v=v_0+at\); \
(x=x_0+v_0t+\tfrac12at^2\); \(v^2=v_0^2+2a\Delta x\). MCAT_Physics::Kinematics
Which kinematics equation has no time variable, and why is that useful? \
(v^2=v_0^2+2a\Delta x\) — use it whenever time isn't given or isn't needed.
MCAT_Physics::Kinematics
On an x–t graph, what does the slope represent? Instantaneous velocity.
MCAT_Physics::Kinematics
On a v–t graph, what does the area under the curve represent? Displacement.
MCAT_Physics::Kinematics
In projectile motion, how do horizontal and vertical motion relate? They're
independent — horizontal velocity stays constant, vertical velocity changes under
gravity, at the same time. MCAT_Physics::Kinematics
Give the range equation for a projectile launched and landing at the same height.
\(R = \dfrac{v_0^2\sin(2\theta)}{g}\). MCAT_Physics::Kinematics
State Newton's second law. \(F = ma\) — net force equals mass times
acceleration. MCAT_Physics::Forces
What is the friction force equation? \(f = \mu N\), where N is the normal
force. MCAT_Physics::Forces
How is torque calculated? \(\tau = rF\sin\theta\) — force times lever arm times
the sine of the angle between them. MCAT_Physics::Forces
What two conditions define mechanical equilibrium? \(\sum F = 0\) and \(\sum \
tau = 0\) — net force and net torque both zero. MCAT_Physics::Forces
State Newton's third law. \(\vec F_{12} = -\vec F_{21}\) — the two forces act
on two different objects. MCAT_Physics::Forces
What should you draw before writing any force equation? A free-body diagram —
especially for equilibrium and biomechanics (lever/joint) passages.
MCAT_Physics::Forces
Give the equation for work done by a constant force. \(W = Fd\cos\theta\).
MCAT_Physics::Work_&_Energy
Give the kinetic energy and gravitational potential energy formulas. \(K=\
tfrac12mv^2\); \(U_g = mgh\). MCAT_Physics::Work_&_Energy
What is impulse, and how does it relate to momentum? \(\Delta p = F\,\Delta t\) —
impulse equals the change in momentum. MCAT_Physics::Work_&_Energy
When is momentum conserved? When is kinetic energy conserved? Momentum: in every
collision. Kinetic energy: only in elastic collisions.
MCAT_Physics::Work_&_Energy
Give the equation for power. \(P = W/t\) — work (or energy) delivered per unit
time. MCAT_Physics::Work_&_Energy
Give the momentum formula. \(p = mv\). MCAT_Physics::Work_&_Energy
Give the density formula. \(\rho = m/V\). MCAT_Physics::Fluids
Give the hydrostatic pressure formula. \(P = P_0 + \rho g h\) — pressure
increases with depth. MCAT_Physics::Fluids
State Archimedes' principle as an equation. \(F_b = \rho_{\text{fluid}} V g\) —
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#tags column:3
What are the five SI base quantities and their units tested on the MCAT? Length
(m), mass (kg), time (s), current (A), temperature (K). MCAT_Physics::Units
Express a Newton, a Pascal, and a Joule in base SI units. \(N = kg\cdot m/s^2\), \
(Pa = N/m^2\), \(J = N\cdot m\). MCAT_Physics::Units
1 atm equals how many Pa and how many mmHg? 1 atm = 101,325 Pa ≈ 1×10⁵ Pa = 760
mmHg. MCAT_Physics::Units
How many joules in one calorie? 1 cal = 4.184 J. MCAT_Physics::Units
Why check units before trusting a calculated answer? Mismatched units mean an
arithmetic error occurred — it's the fastest way to eliminate wrong answer choices.
MCAT_Physics::Units
What's the fastest way to simplify an ugly number on a no-calculator exam?
Convert to scientific notation first, then handle the digits and exponent
separately. MCAT_Physics::Units
Give the three constant-acceleration kinematics equations. \(v=v_0+at\); \
(x=x_0+v_0t+\tfrac12at^2\); \(v^2=v_0^2+2a\Delta x\). MCAT_Physics::Kinematics
Which kinematics equation has no time variable, and why is that useful? \
(v^2=v_0^2+2a\Delta x\) — use it whenever time isn't given or isn't needed.
MCAT_Physics::Kinematics
On an x–t graph, what does the slope represent? Instantaneous velocity.
MCAT_Physics::Kinematics
On a v–t graph, what does the area under the curve represent? Displacement.
MCAT_Physics::Kinematics
In projectile motion, how do horizontal and vertical motion relate? They're
independent — horizontal velocity stays constant, vertical velocity changes under
gravity, at the same time. MCAT_Physics::Kinematics
Give the range equation for a projectile launched and landing at the same height.
\(R = \dfrac{v_0^2\sin(2\theta)}{g}\). MCAT_Physics::Kinematics
State Newton's second law. \(F = ma\) — net force equals mass times
acceleration. MCAT_Physics::Forces
What is the friction force equation? \(f = \mu N\), where N is the normal
force. MCAT_Physics::Forces
How is torque calculated? \(\tau = rF\sin\theta\) — force times lever arm times
the sine of the angle between them. MCAT_Physics::Forces
What two conditions define mechanical equilibrium? \(\sum F = 0\) and \(\sum \
tau = 0\) — net force and net torque both zero. MCAT_Physics::Forces
State Newton's third law. \(\vec F_{12} = -\vec F_{21}\) — the two forces act
on two different objects. MCAT_Physics::Forces
What should you draw before writing any force equation? A free-body diagram —
especially for equilibrium and biomechanics (lever/joint) passages.
MCAT_Physics::Forces
Give the equation for work done by a constant force. \(W = Fd\cos\theta\).
MCAT_Physics::Work_&_Energy
Give the kinetic energy and gravitational potential energy formulas. \(K=\
tfrac12mv^2\); \(U_g = mgh\). MCAT_Physics::Work_&_Energy
What is impulse, and how does it relate to momentum? \(\Delta p = F\,\Delta t\) —
impulse equals the change in momentum. MCAT_Physics::Work_&_Energy
When is momentum conserved? When is kinetic energy conserved? Momentum: in every
collision. Kinetic energy: only in elastic collisions.
MCAT_Physics::Work_&_Energy
Give the equation for power. \(P = W/t\) — work (or energy) delivered per unit
time. MCAT_Physics::Work_&_Energy
Give the momentum formula. \(p = mv\). MCAT_Physics::Work_&_Energy
Give the density formula. \(\rho = m/V\). MCAT_Physics::Fluids
Give the hydrostatic pressure formula. \(P = P_0 + \rho g h\) — pressure
increases with depth. MCAT_Physics::Fluids
State Archimedes' principle as an equation. \(F_b = \rho_{\text{fluid}} V g\) —
