Nsc07 First Formal Assessment Physics 2

30 Questions | By Thechadwictan | Updated: Mar 21, 2022 | Attempts: 414

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This assessment covers the first topics in physics 2. Please answer the quiz in real time. Password is spuqc.

Questions and Answers

1.

Kinetic energy and potential energy are two types of
- A.
  
  Electrical energy
- B.
  
  Nuclear energy
- C.
  
  Mechanical energy
- D.
  
  Solar energy
2.

Which form of energy does the flowing water possess?
- A.
  
  Potential energy
- B.
  
  Electrical energy
- C.
  
  Kinetic energy
- D.
  
  Chemical energy
3.

A body of mass 2 kg is dropped from a height of 1m. Its kinetic energy as it touches the ground is _______
- A.
  
  4.33 J
- B.
  
  15.7 J
- C.
  
  15.7 N
- D.
  
  19.6 J
- E.
  
  19.6 N
4.

A unit of power is _______
- A.
  
  Watt per second
- B.
  
  Joule
- C.
  
  Kilojoule
- D.
  
  Joule per second
5.

Power is a measure of the _______
- A.
  
  Rate of change of momentum
- B.
  
  Force which produces motion
- C.
  
  Change of energy
- D.
  
  Rate of change of energy
- E.
  
  Change in momentum
6.

Two objects of masses 1 x 10^-³ kg and 4 x 10^-³ kg have equal momentum. What is the ratio of their kinetic energies?
- A.
  
  4:1
- B.
  
  2:1
- C.
  
  16:1
- D.
  
  8:1
- E.
  
  1:1
7.

A 40 newton object is released from a height of 10 m. Just before it hits the ground, its kinetic energy, in joules is _______
- A.
  
  4000
- B.
  
  3920
- C.
  
  2800
- D.
  
  400
- E.
  
  None of the above
8.

If the speed of an object is doubled then its kinetic energy is _______
- A.
  
  Doubled
- B.
  
  Quadrupled
- C.
  
  Halved
- D.
  
  Tripled
9.

A man of mass 50 kg jumps to a height of 1 m. His potential energy at the highest point is (g = 10 m/s²)
- A.
  
  50 J
- B.
  
  60 J
- C.
  
  500 J
- D.
  
  600 J
10.

The type of energy possessed by a simple pendulum, when it is at the mean position is
- A.
  
  Kinetic energy
- B.
  
  Potential energy
- C.
  
  Potential energy + kinetic energy
- D.
  
  Sound energy
11.

An iron sphere of mass 30 kg has the same diameter as an aluminium sphere whose mass is 10.5 kg. The spheres are dropped simultaneously from a cliff. When they are 10 m from the ground, they have the same _______.(assume air resistance is negligible)
- A.
  
  Acceleration
- B.
  
  Momentum
- C.
  
  Potential energy
- D.
  
  Kinetic energy
12.

A 1 kg mass has a kinetic energy of 1 joule when its speed is
- A.
  
  0.45 m/s
- B.
  
  1 m/s
- C.
  
  1.4 m/s
- D.
  
  4.4 m/s
13.

If air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body _______
- A.
  
  Increases
- B.
  
  Decreases
- C.
  
  Becomes zero
- D.
  
  Remains the same
14.

An object of mass 1 kg has potential energy of 1 joule relative to the ground when it is at a height of _______.
- A.
  
  0.102 m
- B.
  
  1 m
- C.
  
  9.8 m
- D.
  
  32 m
15.

A young girl drags her favorite dolly by the hair at an angle of 55° to the ground for a distance of 4 m. If she pulls with a force of 3 N, what is the total work that she has done?
- A.
  
  Greater than 3 joules
- B.
  
  Less than 3 joules
- C.
  
  No work was done
- D.
  
  It depends on the sine function of the angle
16.

Which of the following is a a scalar quantity?
- A.
  
  Temperature
- B.
  
  Force
- C.
  
  Acceleration
- D.
  
  Velocity
17.

Which of the following is a a vector quantity?
- A.
  
  Heat
- B.
  
  Length
- C.
  
  Displacement
- D.
  
  Distance
18.

The number below is in scientific notation11.1 X 10²
- A.
  
  True
- B.
  
  False
19.

The number below has five significant figures0.0110
- A.
  
  True
- B.
  
  False
20.

Conversion of chemical energy to electrical energy occurs in
- A.
  
  Transformers
- B.
  
  Hydroelectric plants
- C.
  
  Batteries
- D.
  
  Wind power
21.

Conversion of chemical energy to mechanical energy occurs in
- A.
  
  Light rail transits
- B.
  
  Buses
- C.
  
  Lightning
- D.
  
  Thunder
22.

Potential energy is converted to mechanical energy in
- A.
  
  Transformers
- B.
  
  Batteries
- C.
  
  Solar cells
- D.
  
  Hydroelectric plants
23.

Chemical energy is converted to mechanical energy; and then converted to electrical energy in
- A.
  
  Solar cells
- B.
  
  Wind turbines
- C.
  
  Wave power
- D.
  
  Generators
24.

Energy required to move an object (mass = 10 kg) to a height of 10 meters in joules. Your answer should be a whole number. (number lang po, wala ng units)
25.

Two forces are acting on a stationary book on a table
- A.
  
  True
- B.
  
  False