4B physical science section review
Exam Question & Answers 2025/2026
How many positions coordinates are required to identify the position of
a system undergoing one-dimensional motion? What symbol should
you use to identify a system's position in one-dimensional motion? -
CORRECT ANSWERS ✔✔Only one coordinate is required to identify
positions in one-dimensional motion. The symbol x is used to identify
the position coordinate, and t for the time coordinate.
A common black ant discovers a piece of bread 85 cm east of the
entrance of her nest. If the ant carries 10 bits of bread back to her nest
on separate trips before moving on to other chores, what distance did
she travel after discovering the bread? What was her displacement
from the nest after dropping up the last bit of bread? - CORRECT
ANSWERS ✔✔The total distance traveled by the ant in 9 round trips
and one 1/2 trip, or 19 one bash way trips: 19*85 cm=1615 cm. The
displacement of the ant after the tenth trip is 0 cm ( the displacement
origin is the nest.)
An archer shoots an arrow into a target 53 m north of his position.
What do you call the magnitude of the arrow's displacement? How
large is the magnitude? - CORRECT ANSWERS ✔✔The magnitude of
the arrow's displacement is called distance, and it is 53 m.
Define speed and give it's formula. Identify each quantity in the
formula. What quantity does this formula give in real-world problems? -
CORRECT ANSWERS ✔✔Speed is the rate of motion or the rate of
change of position.
Exam Question & Answers 2025/2026
How many positions coordinates are required to identify the position of
a system undergoing one-dimensional motion? What symbol should
you use to identify a system's position in one-dimensional motion? -
CORRECT ANSWERS ✔✔Only one coordinate is required to identify
positions in one-dimensional motion. The symbol x is used to identify
the position coordinate, and t for the time coordinate.
A common black ant discovers a piece of bread 85 cm east of the
entrance of her nest. If the ant carries 10 bits of bread back to her nest
on separate trips before moving on to other chores, what distance did
she travel after discovering the bread? What was her displacement
from the nest after dropping up the last bit of bread? - CORRECT
ANSWERS ✔✔The total distance traveled by the ant in 9 round trips
and one 1/2 trip, or 19 one bash way trips: 19*85 cm=1615 cm. The
displacement of the ant after the tenth trip is 0 cm ( the displacement
origin is the nest.)
An archer shoots an arrow into a target 53 m north of his position.
What do you call the magnitude of the arrow's displacement? How
large is the magnitude? - CORRECT ANSWERS ✔✔The magnitude of
the arrow's displacement is called distance, and it is 53 m.
Define speed and give it's formula. Identify each quantity in the
formula. What quantity does this formula give in real-world problems? -
CORRECT ANSWERS ✔✔Speed is the rate of motion or the rate of
change of position.
