UAM/PM
What is the shape of the trajectory of a projectile?
Parabolic
Which quantity of matter in an object?
Mass
What does the law of conservation of mechanical energy state?
For any system the total amount of mechanical energy remains the same
What Law explains that the system’s internal energy can be changed by transferring energy by either work, heat, or a combination of the two.
1st Law of Thermodynamics
What energy transformation takes place in a generator?
mechanical to electrical
What force enables objects to reach the ground?
Gravitational Force
What is the formula for momentum?
p=mv
What is potential energy?
Stored Energy
What happens to internal energy when both heat transfer (Q) and work done (W) are equal?
The internal energy is the same
During which stage of providing electricity to consumer is a generator used?
Generation
What happens to the vertical velocity of an object as it travels through the air?
It changes continuosly
What is the impulse of an object moving with constant momentum?
What happens to the energy of a coconut that falls freely?
Loses potential and gains kinetic energy.
The total mechanical energy of the object at the highest point compared to its total mechanical energy at the lowest point is
Equal
What do you call a facility of producing electricity from energy sources?
Power Plant
If you throw a baseball straight up, what is its vertical velocity at the highest point?
0 m/s2
A mini dump truck full of abaca fiber collides with a motorcycle or habal-habal. The velocity of the truck and the motorcycle is the same. Which has a greater impulse? Why?
The mini dump truck because it has larger change in momentum.
What is impulse?
It is a force applied to an object for a period of time.
Heat is added in our body by metabolizing food, and our body does work in breathing, walking, and other activities. If we return in the same state at the end of the day, how will you describe the work and heat of our body?
The amount of heat is equal to the work done
During which stage of providing electricity to consumers is a pole transformer used?
distribution of individual consumers
A stand holds two white balls, A and B. At the same instant, ball A is dropped straight down, and ball B is shot straight out. Which ball will hit the ground first? (Neglect Air resistance)
Both balls will not reach the ground.
Two billiard balls approach each other at equal speed. If they collide in a perfectly elastic collision, what would be their velocities after collision?
Same in magnitude but opposite in direction
Suppose you ride a bus from Iligan City to Cagayan de Oro City. What do you think will happen to the bus after if it passes along a curvy road?
The bus will slow down.
What does the law of conservation of mechanical energy state?
For any system the total amount of mechanical energy remains the same
What happens to the voltage that travels from the source to household?
The voltage is stepped-up for transmission and step-down before being distributed.