Physics Newton's law

A body will remain in its state of rest or motion at a constant velocity even if a resultant force acts on it.

• True

• False

When a resultant force acts on an object, the object will move in the direction of the resultant force at a velocity directly proportional to the force and inversely proportional to the mass of the object.

• True

• False

When object A exerts a force on object B, object B simultaneously exerts an oppositely directed force of equal magnitude on object A.

F_{A on B} = - F _{B on A}

• True

• False

Velocity is a vector and is represented with an arrow over the v.

• True

• False

Acceleration is the rate of change in speed and therefore is a scalar, represented by the letter a.

• True

• False

Force is a scalar quantity, meaning it has only magnitude and is represented only by the letter F.

• True

• False

Each particle in the universe attracts every other particle with a gravitational force that is directly proportional to the product of their masses and inversely proportional to the distance between their centers.

• True

• False

A car of mass 1000 kg accelerates on a straight, flat, horizontal road with an acceleration
a = 0.3 m $s^{-2}$  .
The driving force F on the car is opposed by a resistive force of 500 N. The net (resultant) force on the car is

• 200N

• 300N

• 500N

• 800N

Stephen pushes two boxes P and Q, that stay in contact, along a rough table, with a force F of 30 N. Box P has a mass of 2.0 kg and box Q has a mass of 4.0 kg. Both boxes move with constant speed.

• 0N

• 5.0N

• 15N

• 30N