Exam 3: Force and Motion

Force is a(n) ______________ quantity.

"Weightlessness" occurs when an object

G (big G) is not a(n) ______________, as g (little g) is.

On which planet (other than Earth) have air bags been deployed?

A constant net force acting on an object that is free to move will produce a constant

Linear momentum

A(n) ______________ force is necessary for uniform circular motion.

The angular momentum of a body is constant if the

A spacecraft in space keeps going at the same velocity, even without firing its rockets, in accordance with the _______________ law of motion.

If an unbalanced force of 8 N force acts on a 7-kg object, what is its acceleration?

Mass is a measure of

Angular momentum has units of ______________.

The force required to move a 90.0 kg object in a 85.0 m circle at a constant speed of 8.10 m/s is

______________ is the symbol for the universal gravitational constant.

When you push on a stationary object on a horizontal surface and it doesn't move, what kind of force is most likely opposing your efforts?

What must be exerted on an object to change the angular momentum?

Newton's law of gravitation applies to all ______________.

In keeping with Newton's second law of motion, if the force acting on a moving object is doubled, then its ______________ is doubled.

The constant G that appears in the equation F = Gm₁m₂/r² is

The speed of a comet in its orbit around the Sun is ______________ when its distance from the Sun is least (perihelion).