# Nsc07 First Formal Assessment Physics 2

30 Questions | Total Attempts: 379  Settings  This assessment covers the first topics in physics 2. Please answer the quiz in real time. Password is spuqc.

• 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.

• 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

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