AQA A-Level Physics 3.6 Further mechanics and thermal physics overview quiz quiz

Its speed is continuously increasing as it travels around the circle

There is no acceleration at all, because the speed stays constant throughout

Its velocity changes direction, so it accelerates towards the centre

It accelerates outwards, away from the centre of the circular path

$F = \frac{mv}{r}$

$F = \frac{mr}{v^2}$

$F = mvr$

$F = \frac{mv^2}{r}$

Acceleration is proportional to displacement and directed towards equilibrium

Acceleration is constant and directed towards equilibrium

Acceleration is proportional to displacement and directed away from equilibrium

Velocity is proportional to displacement

$0.10$ s

$0.31$ s

$1.0$ s

$3.1$ s

It becomes higher and sharper and shifts to a slightly higher frequency

It stays exactly the same height and width as before

It becomes lower and broader and shifts to a slightly lower frequency

It shifts to a much higher frequency without changing its height

The driving frequency is much higher than the natural frequency

The driving frequency is zero

Damping is at its maximum

The driving frequency equals the natural frequency

$42000$ J

$4200$ J

$84000$ J

$2100$ J

Molecules occupy a large fraction of the container's volume

Collisions between molecules are perfectly elastic

There are strong forces between molecules at all times

Molecules all move at the same speed

$\frac{1}{2}kT$

$\frac{3}{2}RT$

$\frac{3}{2}kT$

$kT$

$1.0 \times 10^4$ Pa

$5.0 \times 10^4$ Pa

$2.5 \times 10^5$ Pa

$1.0 \times 10^5$ Pa

$v = \omega r$

$v = \frac{\omega}{r}$

$v = \omega r^2$

$v = \frac{r}{\omega}$

At the amplitude (maximum displacement)

At the equilibrium position

Halfway between equilibrium and the amplitude

It is constant everywhere