Peperiksaan Percubaan SPM 2021

Which quantity is a vector quantity?

• Mass

• Energy

• Pressure

• Momentum

What is the relationship between x and a?

• x is inversely proportional to a.

• x decreases linearly to a.

• x decreases linearly to 1/a.

• x is directly proportional to 1/a.

Which graph shows a constant velocity?

• A

• B

• C

• D

Which observation is correct?

• All three objects float in the cylinder

• All three objects reach the base at the same time

• The marble reaches the base earlier than the coin

• The coin and the marble reach the base earlier than the dried leaf

The backwards movement of the pillion rider can be explained by

• the concept of inertia

• the concept of equilibrium of forces

• principle of conservation of momentum

• principle of conservation of energy

Which statement is true?

• Elastic collision occurs

• Total momentum is conserved

• Total kinetic energy is conserved

• Both objects will move with different velocity after collision.

The athlete bent his legs to reduce the...

• impulse on his feet

• impulsive force on his feet

• velocity just before landing

• time of impact between his feet and the sand

Which of the following can be applied by the Universal Law of Gravitation?

• The planets around the Sun

• The Earth and the Moon

• The Earth and the apple

• Any pair of bodies

Kepler’s Third Law states...

• the orbit of a planet around the Sun is an ellipse, with the Sun at one focus

• the square of the orbital period of a planet is directly proportional to the cube of the radius of its orbit.

• the semimajor axis is equal to the planet’s average distance from the Sun

• none of these answers is correct

What is the temperature of the metal sphere when thermal equilibrium is achieved between the metal sphere and the liquid?

• More than 90 °C

• Same as room temperature

• Less than 40 °C

• Between 40 °C and 90°C