..2255Name: ___________________________________________Grade & Section:
_________________ Subject: Science 9 Teacher: __________________________________
Score: ______________
________________________________________________________________________________
Lesson
: Quarter 4 Week 2 LAS 1
Activity Title
: Knowing is Learning!
Learning Target
: Define the important terms related to Projectile Motion
Reference(s)
: Science 9 Learner’s Material, Google dictionary, MELC (S9FEIVa-35)
http://courses.lumenlearning.com, http://slideshare.net
LAS Writer
: Ailyn Grace G. Diez
________________________________________________________________________________

Projectile – refers to the motion of an object that is thrown, or projected into the air at an angle.

Projectile motion – a combination of vertical and horizontal motions.

Trajectory – it is the path traced by a projectile during its motion.

Parabola – the trajectory of a projectile in free fall.

Gravity – “g” the primary force acting on a projectile (its value is 9.8 m/s/s downward).

Time of Flight – “T” It is the total time during which a projectile remains in space.

Maximum Height – it is the vertical distance between point of projection and the point where
vertical velocity is zero.

Horizontal Range – it is the horizontal distance between point of projection and point of landing.

Angle of Projection – it is the angle made by initial velocity with horizontal.

Acceleration – A change in velocity over a given time period.

Velocity – The speed of an object in a particular direction.
ACTIVITY:
MULTIPLE CHOICE: Write the letter of your answer on the space provided before each
number.
_______1. Refers to the path traced by a projectile during its motion.
a. Trajectory
c. Projectile motion
b. Parabola
d. Force and Motion
_______2. The trajectory of a projectile in free fall is called ______?
a. Acceleration
c. Time of Flight
b. Parabola
d. Velocity
_______3. Refers to the motion of an object that is thrown, or projected into the air at an angle.
a. Gravity
c. Projectile
b. Trajectory
d. Horizontal Range
_______4. This is the primary force acting on a projectile (its value is 9.8 m/s/s downward).
a. Velocity
c. Projectile Motion
b. Time of Flight
d. Gravity
_______5. It is a combination of vertical and horizontal motions that are completely independent of
each other.
a. Gravity
c. Projectile motion
b. Acceleration
d. Maximum Height