Notes

JAN AUSTINE GAIL C. PATRONO
GRADE 9-EINSTEIN
SCIENCE
QUARTER 4
WEEK 1-2

LEARNING TASK 1

PROJECTILE
HEIGHT
PROJECTILE MOTION
TRAJECTORY
RANGE

LEARNING TASK 2
Because the marble moved both horizontally (farther from the table) and vertically (closer to the ground), we say that we are dealing with a trajectory, because the marble’s motion is also influenced by gravity.

ASSESSMENT
1 B
2 C
3 A
4 C
5 C
6 C
7 C
8 B
9 A
10 D


JAN AUSTINE GAIL C. PATRONO
GRADE 9-EINSTEIN
SCIENCE
QUATER 4
WEEK 3-4

LEANING TASK 1
1. the total momentum of the system is zero. since no external force acting on
2. A rocket in its simplest form is a chamber enclosing a gas under pressure. A small opening at one end of the chamber allows the gas to escapee.

LEARNING TASK 2
(m1+m2)vf=m1vi(m1+m2)vf=m1vi
vf=m1vim1+m2=(0.30)(1.2)0.30+0.50vf=m1vim1+m2=(0.30)(1.2)0.30+0.50
= 0.45 m/s

LEARNING TASK 3
-DROPPING A BALLS OF CLAY
-COLLISION OF TWO DIFFERENT CARS
-WHEN A BASEBALL BAT STRIKING A BALL

ASSESSMENT
1 C
2 B
3 A
4 C
5 D

WORKSHEET WEEK 3
1 B
2 A
3 D
4 B
5 D
6 A
7 C
8 C
9 A
10 D


JAN AUSTINE GAIL C. PATRONO
GRADE 9 EINSTEIN
QUATER 4
WEEK 5-6
LEARNING TASK 1
1 As an object falls under the influence of gravity, potential energy is greater than kinetic energy after halfway point/ before the halfway point.
2 LOWEST POINT
3 The potential energy of the pendulum is 0 when the pendulum is at its equilibrium position. Therefore, at this point, the mechanical energy E is equal to the kinetic energy KE (all the energy at the equilibrium position is kinetic).
4 As the pendulum falls to its lowest point, its potential energy is converted into kinetic energy. This is because as the pendulum falls to its lowest point, it speeds up more and more. Thus, at its lowest point, the pendulum has its kinetic energy at a maximum.
5 KE= ½mv2
6 Law of Conservation of Mechanical Energy: The total amount of mechanical energy, in a closed system in the absence of dissipative forces (e.g. friction, air resistance), remains constant. This means that potential energy can become kinetic energy, or vice versa, but energy cannot “disappear”.


LEARNING TASK 2
POINT GPE KE
C 1.96J 2.94J

GROUND 0 4.9J


ASSESSMENT
1 C
2 B
3 A
4 D
5 D

worksheet week 5

1 energy
2 electricity
3 energy
4 water
5 hydropower


1 B
2 D
3 C
4 A
5 A



























JAN AUSTINE GAIL C. PATRONO
GRADE 9-EINSTEIN
SCIENCE
QUARTER 4
WEEK 8

LEARNING TASK 1
5
3
6
2
4
1


JAN AUSTINE GAIL C. PATRONO
GRADE 9 EINSTEIN
QUATER 4
worksheet week 5

1 energy
2 electricity
3 energy
4 water
5 hydropower


1 B
2 D
3 C
4 A
5 A