Learning Activity 1.1. MULTIPLE CHOICE Read and analyze the questions below. Give the letter of the correct answer.

1. It is a vector quantity that is defined as the rate at which the object changes its velocity.

A. acceleration

C. velocity

B. projectile motion

D. gravity

2. It is defined as a vector measurement of the rate and direction of motion.

A. acceleration

C. velocity

B. projectile motion

D.gravity

3. A form of motion experienced by an object or particle that is projected near the Earth's surface and moves along a curved path under the action of gravity only.

A. acceleration

C. velocity

B. projectile motion

D. gravity

4. It is the force by which the planet or other body draws object toward its center.

A. acceleration

C. velocity

B. projectile motion

D. gravity

5. What is the accepted value of acceleration due to gravity?

A. 9.8 m/s

B. 9.8 m/s2

C. 9.8 m

D. 9.8 s

Learning Activity 1.2. FALLING BOOK: Perform the experiment below, the answer the question that follows.

Materials:

Smooth sheet of paper (bond paper or any uncrumpled paper)

Book Procedure:

1. Take a smooth sheet of paper that is small enough so it does not extend beyond the edges of the cover of the book.

2. Hold the paper below the book. Hold them horizontally and release them at same time. Observe.

State your observation here:

3. Hold the paper on top of the book and drop them together.

Answer the questions:

1. What did you expect to happen when doing steps 2 and 3?

2. Which step satisfied your expectations?