The initial velocity of Manuel playing “luksong tinik” has horizontal and vertical components that are equal in magnitude. What angle does his velocity make with the horizontal?

A Sepak takraw that is kicked from a height of two meters a path that is .

A goalie made three soccer punts at 70˚, 50˚, and 30˚ with varying speeds – all reaching the same maximum heights. Which statement is correct?

A volleyball is served at a speed of 8.0 m/s at an angle 35˚ above the horizontal. What is the speed of the ball when received by the opponent at the same height?

A Batang Pinoy athlete from your school throws a javelin, always at the same speed, at four different angles (30˚, 40˚, 60˚, and 80˚) above the horizontal. Which two throws cause the javelin to land the same distance away?

Two identical cars are travelling along EDSA. Which of the two cars would have a greater momentum?

A bus and a car are travelling along EDSA having the same velocity. Which of the two vehicles would have a greater momentum?

A 25-kg girl is riding a 5-kg with a velocity of 5 m/s the East. What is the total momentum of a girl and a bike together?

Which of the following is a necessary condition for the total momentum of a system to be conserved?

Two billiard balls approach each other with the same speed. If they collide in a perfectly elastic collision, what would be their velocities after collision?

What is the energy of a of a motorcycle moving slowly at the top of a hill?

Which event illustrates the direct transformation of potential to kinetic energy?

Which among the forms of energy is considered a potential energy?

Which of the following happens to a coconut that falls freely?

A torchlight fell from a watch tower. The potential energy of the torchlight at the highest point compared to its kinetic energy at the lowest point is .

A bag drops some distance and gains 90 J of kinetic energy. Considering air resistance, how much gravitational potential energy did the bag lose?

The wind-up toy that is fully wound and at rest possesses

In which case is there a decrease in gravitational potential energy?

Francis stretched a rubber band five times. After that, he observed that the rubber band felt warm. Did the rubber band gain heat?

An ideal gas is compressed without allowing any heat to flow into or out of the gas. What will happen to the temperature of the gas in this process?

While a gas does 400J of work on its surroundings, 900J of heat is added to the gas. What is the change in the internal energy of the gas?

If 500 calories of heat are added to a gas, and the gas expands doing 500J of work on its surroundings, what is the change in the internal energy of the gas?

A beaker containing 400g of water has 1200J of work done on it by stirring and 200cal of heat added to it from a hot plate. What is the change in the internal energy of the water in joules?

A beaker containing 400g of water has 1200J of work done on it by stirring and 200cal of heat added to it from a hot plate. Determine the change in the internal energy of the water in calories?

What causes thermal pollution?

Mang Fermin, a carpenter, is planning a piece of wood with his planar. After how many minutes, he observed that it is hot. Does the wood gain heat?

Renzo observes the waterfalls used in hydroelectric power plant. He found out that it flows naturally that turbine rotates. What makes this so?

How does water from the deep well move upward?

Chef Mariel left a plate of chopped apple, a plate of lettuce and a cup of pineapple in the table to answer a phone call. When she comes back, she found out that the fruit and the vegetable discolored into brown. What phenomenon explains this?

Given the following mechanisms, which best describes correct sequence of the refrigerator cycle? 1. compression 3. expansion 2. condensation 4. evaporation

What is the function of a heat engine?

What is the process of compression and expansion of gas so that no heat enters or leaves a system?

What is the correct sequence of four cycle-stroke of gasoline engine? 1. Intake 3. Exhaust 2. Power 4. Compression

The methods by which heat may be converted into work, which is the least practical?

Why is heat engine not 100% efficient?

Why is it colder in the countryside than in the cities?

In which of the following units is electrical consumption measured by electrical companies for our household consumption in our homes?

In power stations generating electricity, power is measured in

What energy transformation takes place in a generator?

Who among the following scientists discovered the relationship between electricity and magnetism?

You made an electric motor in school. When you tested it in using 4 dry cells, the armature turned very fast. What should you do to make it turn slower?

Last month, Ms. Alcantara’s electric meter reads 8765k/Wh. How much will she pay for power generation if the charge of electric company per kWh is 6.88 pesos and her meter reads 9975 this month?

Jaypeth paid Php 1250.00 for electric bill. How much energy (in kWh) is consumed if the electric company charges Php 6.88/kWh?

To reduce your electric bill

What is produced if the magnet and the conductor move relative to each other?

A 60 watt bulb is connected to 120V plug. What is the current in the bulb?

When there is a change in the magnetic field in a closed loop wire

All of the following power plants use steam to drive the turbines to produce electricity except

Why do power stations generate AC, and not DC?