KSSM F4 Chapter 1 - 3

Which of the following volume is the smallest?

• 7.41 X 10¹⁶ μm³

• 8.25 X 10³ cm³

• 8.66 x 10⁸ mm³

• 9.86 X 10³ dm³

A physical quantity is given by the equation above. The unit for k is kg m² s^–2 while the unit for m is kg. What is the SI unit for b?

• kg m s^–1

• kg m² s^–3

• kg m² s^–2

• kg m s^–2

Which of the following instruments is most suitable to measure a length of 34.3 mm ?

• Measuring tape

  
  

• Metre rule

• Vernier calipers

• Micrometer screw gauge

• 
• 
• 
• 

• Stop immediately

• Accelerates towards X

• Decelerates towards X

• Move towards X with constant speed

A ball of mass 0.25 kg moves at a velocity of 40 m s^-1 along a straight line hit on a wall and bounces back at a velocity of 30 m s^-1 . The impulse acting on the ball is

• 0

• 2.5 kg m s^-1

• 10 kg m s^-1

• 17.5 kg m s^-1

A manipulated variable

• must be a base quantity

• must be a derived quantity

• must remain constant throughout experiment

• can be determined before carrying out experiment

Which of the following steps can reduce the parallax error while recording the value of current from an ammeter?

• Use a more sensitive ammeter

• Use an ammeter with a plane mirror

• Use a magnifying lens while taking the reading

• Calculate the average value from the repeated readings

A meteor which is moving at a speed of 100.0 m s^-1 towards Mars is detected at a height of 207.2 m from its surface. The meteor reaches the surface of Mars after 2.0 s. What is the gravitational acceleration of Mars?

• 0.90 m s^-2

• 3.60 m s^-2

• 53.55 m s^-2

• 103.60 m s^-2

• 1.00 cm

• 1.03 cm

• 1.07 cm

• 1.10 cm