Table of Contents
What type of energy depends on mass and velocity?
Kinetic energy
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.
What is relation between mass and velocity?
The velocity would decrease because mass and velocity are inversely related. However, mass and velocity are indirectly related. Objects with greater mass can have more kinetic energy even if they are moving more slowly, and objects moving at much greater speeds can have more kinetic energy even if they have less mass.
Does mass increase with velocity?
According to Newtonian mechanics the mass of a body does not change with velocity. However, conservation laws, especially here the law of conservation of momentum, hold for any inertial system. Hence, in order to maintain the momentum conserved in any isolated system, mass of the body must be related to its velocity.
What factors does the kinetic energy of an object depend on?
Explain that there are two factors that affect how much kinetic energy a moving object will have: mass and speed. Have students complete this demonstration to learn how mass influences an object’s kinetic energy.
What is the relationship between mass and velocity?
Mass and velocity are both directly proportional to the momentum. If you increase either mass or velocity, the momentum of the object increases proportionally. If you double the mass or velocity you double the momentum.
Which two factors does speed depend on?
Chapter 19 – Motion
Question | Answer |
---|---|
What two factors determine speed? | distance & time |
What is the difference between speed and velocity? | Velocity has direction speed does not. |
What best represents acceleration as presented on a graph? | velocity change vs. time |
What is force? | a push or pull acting on an object. |