Edexcel A-Level Physics Mechanics and materials overview quiz quiz

The acceleration

The average speed

The displacement

The resultant force

The horizontal velocity decreases steadily because gravity acts to slow the forward motion as the object falls

The vertical acceleration is zero throughout the flight while the horizontal velocity increases at g

Both the horizontal and vertical components accelerate at g once the projectile leaves the launch point

The horizontal velocity stays constant and the vertical motion accelerates at g

The resultant force equals the rate of change of momentum

Every action force has an equal and opposite reaction force on a different body

An object stays at rest or moves at constant velocity unless acted on by a resultant force

The total momentum of an isolated system is always conserved during any interaction

Kinetic energy

Momentum

Speed

Both kinetic energy and momentum

$1.0$ N

$5.0$ N

$10$ N

$40$ N

$P = Fs$

$P = \frac{F}{v}$

$P = \frac{1}{2}Fv^2$

$P = Fv$

The ratio of stress to strain in the linear region

The maximum stress the material can withstand just before it fractures and breaks apart

The elastic strain energy stored per unit volume of the material when stretched

The force needed to produce each metre of extension in the sample

$0.40$ J

$0.20$ J

$2.0$ J

$4.0$ J

The drag force on the object has fallen to zero at this stage of the fall

The object is still accelerating because its weight always exceeds the total upward force

The resultant force is zero and the velocity is constant

The upthrust acting on the object is now greater than its weight

All the forces acting on the object must have exactly the same magnitude as each other

The resultant of all the forces must point directly towards the pivot at every instant

The moment produced by each individual force about the pivot must separately equal zero

The total clockwise moment equals the total anticlockwise moment about any point

Mass is a scalar; force is a vector

Mass is a vector; velocity is a scalar

Energy is a vector; force is a scalar

Both mass and force are vectors