Dynamics

Mass equals force divided by acceleration.

Force equals mass times acceleration.

Acceleration equals force divided by mass.

Force is inversely proportional to the product of mass and acceleration.

196 N downwards

49 N downwards

0 N downwards

98 N downwards

Provided system initially rest starts motion spontaneously under own weight disparity denseness induces rotational tendency around fulcrum attributing heavier spheroid lowermost positioning inevitably

Faulty guess tertiary gravitating lesser dense globe upwards result intensified other sphere adjusts stable orientation eventually reached

Misjudged reply primary elevating lighter orb downwards consequence enhanced denser counterpart amends equilibrium stance attained eventually

Erroneous alternative secondary superior globule descends owing extra denseness inferring balance condition reestablishes subsequently

Nuclear energy

Gravitational potential energy

Electrical energy

Thermal energy

meters per second squared

joules

kilograms

newtons

The object continues moving at a constant velocity or remains at rest.

The object immediately comes to rest regardless of previous motion.

There is uniform acceleration in the direction of applied forces.

There will be increasing acceleration in the opposite direction of applied forces

The acceleration would also double.

The acceleration would increase by a factor of $\sqrt{2}$.

The acceleration would remain unchanged.

The acceleration would quadruple.

Frictional force triples

It halves

It reduces to a third

It has no change

The initially moving cart stops, and the initially stationary cart moves at the original speed.

Both carts move together at half of the initial velocity.

Both carts come to a complete stop after colliding.

The initially moving cart continues at its original velocity, and the second one remains stationary.

It decreases since heavier objects resist changes in motion more than lighter ones.

It doubles since doubling the mass doubles the acceleration in F=ma relationship.

It increases because more massive objects have higher accelerations for given forces.

It will not change because acceleration due to gravity depends on radius but not mass.