CM6_SSGPHY1 QUIZ PART 1

Which of the following is correct SI unit for work?

• kg m/s

• kg m/s²

• kg m²/s²

• kg m²/s³

Which of the following is correct SI unit for power?

• kg m/s

• kg m/s²

• kg m²/s²

• kg m²/s³

Which of the following statement is TRUE for work
I. The more force you apply, the more work you do.

II. The angle is zero when force and displacement are parallel.

III. The SI unit is J (Joules)

• I & II

• I & III

• II & III

• I, II, & III

If the power of a machine is doubled while doing the same amount of work, what happens to the time taken to do the work?

• The time doubles

• The time halved

• The time remains the

• The time quadrupled

For a constant amount of work, if the time taken to do the work decreases, what happens to the power required?

• The power decrease

• The power remains the same

• The power increase

• The power becomes zero

Which of the following statement is TRUE about work done when you lifting an object
I. The magnitude of work is zero
II. The work is affected by gravity
III. The trigonometric sine function can be used to calculate the work.

• I & II

• I & III

• II & III

• I, II, & III

Which of the following energy formed if you placed an object at rest suspended by a rope?

• Kinetic

• Potential

• Mechanical

• Thermal

Which of the following statement is TRUE about Energy
I. Energy exists in several forms
II. Ability or capacity of physical system to perform work
III. Energy cannot be created nor destroyed, but it can only be transformed from one form to another.

• I & II

• I & III

• II & III

• I, II, & III

Which of the following energy is involved in Work-Energy Theorem?

• Kinetic

• Potential

• Mechanical

• Thermal

Which of the following quantity is included in both Potential and Kinetic Energy?

• mass

• gravity

• Velocity

• height