February 25, 2025 Pretest

Which of the following represents time in equations?

• t

• v

• a

• d

What does the symbol "g" stand for in kinematics?

• gravity

• gravitational force

• acceleration due to gravity

• weight

What is the SI unit for velocity?

• m/s

• km/h

• m/s²

• kg/ms

What is the symbol for displacement?

• d

• t

• v

• a

What is the SI unit for acceleration?

• m/s

• m/s²

• kg m/s²

• N

If an object starts from rest, which value is equal to zero?

• final velocity

• initial velocity

• acceleration

• time

What is the acceleration due to gravity on Earth's surface?

• 9.8 m/s

• 9.8 m/s²

• 98 m/s²

• o m/s²

What is the SI unit of displacement?

• g

• km/h

• m

• m/s²

A person throws a rock straight up into the air. At the highest point, what is the velocity of the rock?

• maximum

• zero

• negative

• same as initial velocity

A ball is dropped from a tall building. What will happen to its velocity as it falls, assuming no air resistance?

• It remains constant

• It decreases

• It increases

• It first decreases, then increseas