AS Mechanics Quiz 1

Which of the following is a SUVAT formula?

• $a\ =\ \frac{dv}{dt}$

• $v=u+at$

• $F=\frac{kQ_1Q_2}{r^2}$

• $k=\frac{1}{4\pi\epsilon_0}$

Which of the following is a SUVAT formula?

• $s=\frac{d}{t}$

• $s=ut+\frac{1}{2}at^2$

• $p=mv$

• $a=\frac{dv}{dt}$

Define a "vector":

• A measurement defined by a rate of change of displacement

• A measurement which involves both magnitude and direction

• The concept of space as enfolded in time

• The curvature of a linear system according to non-Euclidean understandings of space-time within a particular non-inertial framework

Displacement is a . . .

• Vector

• Scalar

• Tensor

• Recursive tensor

Newton's Second Law can be expressed as . . .

• $F=ma$

• $F=\frac{\Delta p}{\Delta t}$

• $F=mg$

• $F=\rho Vg$

• $F=\frac{v^2}{r}$

One of the assumptions we can make if we solve a problem using the 'energetics' approach is . . .

• Energy values are path-independent

• The gravitational field strength can be rounded to 10 N/kg
  

• Moving objects are barely considered to be moving
  

• The nature of light can be expressed as both a particle and a wave
  

The gradient of the tangent to a distance-time graph would give the value of the ___________ at that instant.

• speed

• velocity

• momentum

• acceleration

Given that the kinetic energy of a particle is given by  $E_K\ =\ \frac{1}{2}mv^2$ , if you wanted to plot a graph such that the gradient was equal to the mass, you would need to plot . . .

•  $E_K$  as a function of  $v^2$  
  

•  $E_K$  as a function of  $\frac{v^2}{2}$  
  

•  $\frac{v^2}{2}$  as a function of  $E_K$  
  

•  $v^2$  as a function of  $E_K$  
  

The 'moment of a force' is defined as . . .

• The tendency to cause rotation

• A very brief period of time during which you experience an epiphany

• The amount of time for which a force is applied

• $\Delta t=\frac{\Delta p}{F}$

Newton's First Law is also called . . .

• . . . the Law of Inertia

• . . . the Law of Conservation of Motion

• . . . the Iron Law

• . . . The Law of Conservation of Energy