Mechanics

How does friction affect the motion of an object?

• Friction has no effect on the motion of an object

• Friction speeds up the motion of an object

• Friction slows down the motion of an object and can eventually bring it to a stop.

• Friction causes the object to change direction

Explain the concept of kinetic energy.

• Kinetic energy is the energy an object possesses due to its position

• Kinetic energy is the energy an object possesses due to its rest

• Kinetic energy is the energy an object possesses due to its motion, and it is calculated using the formula KE = 0.5 * m * v^2.

• Kinetic energy is the energy an object possesses due to its potential energy

Tags

NGSS.HS-PS3-2

Explain the concept of potential energy.

• Potential energy is the energy that an object possesses due to its position or condition. It is stored energy that has the potential to do work.

• Potential energy is the energy that an object possesses due to its temperature. It is thermal energy.

• Potential energy is the energy that an object possesses due to its color or shape. It is aesthetic energy.

• Potential energy is the energy that an object possesses due to its motion. It is kinetic energy.

Tags

NGSS.MS-PS3-2

The ratio of force, acting perpendicular to the area, on which it acts known as…

• Friction

• Pressure

• Force

• Density

Which fluid principle states that, a change in pressure at any point in a confined fluid is transmitted in all directions throughout the fluid?

• Archimedes’

• Bernoulli’s

• Buoyant

• Pascal’s

The vessels shown below all contain water to the same height. Rank them according to the pressure exerted by the water on the vessel bottoms, least to greatest.

• 3, 4, 2, 1

• 4, 3, 2, 1

• 2, 3, 4, 1

• All pressures are the same

A loaded ship passes from a lake (fresh water) to the ocean (saltwater). Saltwater is more dense than fresh water and as a result the ship will:

• ride higher in the water

• settle lower in the water

• ride at the same level in the water

• experience an increase in buoyant force

Which fluid mechanics principle explained in terms of the law of conservation of energy?

• Archimedes’

• Bernoulli’s

• Pascal’s

• Poiseuille’s

While in orbit around a planet, your speed largely depends on...

• The time of year

• The force of gravity

• The direction you are facing

• The inclination of your orbit

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

To increase the size of your orbit, you should burn in which direction?

• Prograde

• Retrograde

Tags

NGSS.HS-ESS1-4