Science Physics

Which angle produces the greatest range?

• A. 10°

• B. 45°

• C. 60°

• D. 90°

In the diagram, which letter represents the horizontal displacement?

• A

• B

• C

• D

Why transformers work with AC current but NOT with DC?

• A. AC current produces changing magnetic field

  
  

• B. DC current produces changing magnetic field

  
  

• C. DC current is weak

  
  

• D. AC current is powerful

If a free-falling ball is equipped with a speedometer, by how much would its speed-reading increase for every second? 

• A. 0 m/s

  
  

• B. 9.8 m/s

  
  

• C. 10 m/s

  
  

• D. 20 m/s

The flashlight uses three different forms of energy. Which of these shows the energy changes in the CORRECT order?

• A. heat → chemical → light

  
  

• B. chemical → electrical → light

  
  

• C. mechanical → heat → chemical

  
  

• D. electrical → mechanical → chemical

According to the law of conservation of energy, what happens to mechanical energy if the potential energy of an object decreases? Mechanical energy _______. 

• A. increases

  
  

• B. decreases

  
  

• C. remains unchanged

  
  

• D. increases and then decreases

Energy can neither be created nor destroyed but can be converted from one form to another is inferred from ___.

• A. Zeroth law of Thermodynamics

  
  

• B. First Law of Thermodynamics

  
  

• C. Second Law of Thermodynamics

  
  

• D. Basic Law of Thermodynamics

A Philippine tarsier can jump to a height of 1.5 meters in hunting for food. Determine the takeoff speed of the tarsier in m/s? 

• A. 5.4

  
  

• B. 14.7

  
  

• C. 15

  
  

• D. 54

In an engine, what is the unused energy converted into?

• A. internal energy

  
  

• B. pressure

  
  

• C. heat

  
  

• D. work

A projectile is fired at angle above the ground. It lands on the ground 4.0 seconds later. At what time will the projectile reach its highest point of trajectory?

• A. less than 4.0s

  
  

• B. more than 2.0s

  
  

• C. 2.0 s

  
  

• D. less than 2.0 s