Quiz 10

When drawing a free body diagram of a dancer pushing off in a jump, which of the following forces are NOT to be considered

Both a scalar quantity and a vector quantity require magnitude. In addition, a vector requires to full define it.

Force due to friction ______ as the mass of the object increases.

Too fully define a vector quantity, you must specify a _____

If a body has an initial velocity of -20 m/s and it experiences an acceleration of -9.81 m/s2 for 2 seconds, which of the following is true?

2 javelin throwers Bob and Joe release their javs at the same velocity. Joe releases hi a a height of 2.3 m, while Bob releases it at a height of 2m. For them both to maximize their respective horizontal displacements, which of the following is true about their release angles?

Which of the following explains why a positive acceleration does not always indicate an increase in the magnitude of velocity?

In mechanics, acceleration may be used to describe

Which variable below does not influence the flight time of a projectile?

If a body of constant mass is travelling with a constant velocity,

Which quantity uses a chnage in linear momentum?

If a net horizontal force is applied to a body that is at rest, the body will

The form of energy associated with the stiffness and deformability of an object is called

The force to be considered in calculating the work you perform when climbing up a set of stairs is your

Kinetic energy is the energy due to

Mechanical work is performed in all of these types of muscle activity except

The difference b/w positive and negative work stems from the direction of motion of the body the force acts on and the

Gravitational potential energy is the energy

Stability may be increased by