Forces and Dynamics quiz for Singapore O-Level Physics (SEAB 6091) quiz

$15\ \text{m s}^{-2}$

$54\ \text{m s}^{-2}$

$0.17\ \text{m s}^{-2}$

$6.0\ \text{m s}^{-2}$

An object stays at rest or moves at constant velocity unless a resultant force acts

Force equals mass times acceleration

Every action has an equal and opposite reaction

Acceleration is inversely proportional to mass

$55\ \text{N}$

$25\ \text{N}$

$15\ \text{N}$

$40\ \text{N}$

$251.6\ \text{N m}$

$156\ \text{N m}$

$400\ \text{N m}$

$248.4\ \text{N m}$

They are unequal in size

One of them is always friction

They act in the same direction

They act on two different objects

Its mass and the gravitational field strength

Only its volume

Only its shape

Its speed of motion

Equal to the driving force

Zero

Equal to the weight of the car

Equal to the friction only

Its speed at a given moment

The force it exerts on the ground

Its tendency to resist a change in its state of motion

The energy stored in it

$1.5\ \text{N}$

$0.67\ \text{N}$

$5.0\ \text{N}$

$6.0\ \text{N}$

Weight downward and normal contact force upward

Weight upward and friction downward

Two equal friction forces

Only the weight of the book

Clockwise moments are greater than anticlockwise moments

The sum of clockwise moments equals the sum of anticlockwise moments

All forces must be equal

The pivot must be at the centre

The acceleration halves

The acceleration stays the same

The acceleration doubles

The acceleration becomes zero

Weight

Tension

The normal contact force

Friction

Newton's third law

Newton's second law

Newton's first law

The principle of moments