Edexcel A-Level Mathematics Mechanics overview quiz quiz

$F = mg$

$v = u + at$

$F = ma$

$F = \mu R$

$7$ m/s

$24$ m/s

$3$ m/s

$12$ m/s

Displacement

Acceleration

Speed

Force

$5$ N

$49$ N

$9.8$ N

$0.51$ N

$\frac{R}{\mu}$

$\mu mg^2$

$\mu R$

$R - \mu$

It decreases under gravity

It increases under gravity

It becomes zero at the top

It stays constant

Force times perpendicular distance

Force times the mass of the body the force is acting on at that point

Force divided by the perpendicular distance from the point to the line of action

Mass times the acceleration produced by the force on the body at that instant

$17.3$ m/s

$10$ m/s

$20$ m/s

$5$ m/s

Speed, which carries a direction as well as a magnitude

Mass, since it points in the direction of motion

Velocity

Time, because it has both magnitude and direction

Only the resultant force is zero, with no condition needed on the total moment at all

Only the total moment about a point is zero, with no condition on the resultant force

The body is moving at a constant speed in a straight line throughout its whole motion

Both the resultant force and the total moment are zero

Differentiate $s$ with respect to $t$

Integrate $s$ with respect to $t$ to obtain the velocity at that instant

Multiply the displacement $s$ by the time $t$ to obtain the velocity

Divide the displacement $s$ by the time $t$ to obtain the velocity

$\text{kg m s}^{-1}$

$\text{kg m s}^{-2}$

$\text{kg m}^2 \text{s}^{-2}$

$\text{kg s}^{-2}$