3.In a free fall what causes the stone and feather to hit the ground at the same time?
A.Applied force
B. Inertia
c. Acceleration due to gravity D. Air resistance

4.When you slide a box across the floor what force must your push be stronger than?

A Air resistance
B. Friction Force
C. Gravity
D. Normal Force

5. What will happen to the object in motion if a net or unbalanced force acts on it?
A. Change
B. Double
C. Remains the same
D. Stop

6. When you place an object on top of the table, which forces act on the book?

A Gravitational force and Tension force
C. Gravitational force and Friction force
B. Gravitational force and Normal force
D. Gravitational force and Applied force

7. Which statements DOES NOT describe the effects of force on an object?

A. Force can make a moving object stop.
B. Force may not always cause an object to move.
C. Force can change the direction of a moving object.
D. Two or more forces should be present to cause an object to move.

8. What is the mass of the object if it accelerates at a rate of 6 m/safter applying a net force of
45 N?

A. 7.5 kg
B. 51 kg
C. 39 kg
D. 270 kg

9. What acceleration will result when 42 N net force is applied to a 3 kg object?

A. 126 m/s
B. 45 m/s2
C. 39 m/s2
D. 14 m/s?

10. What term is used to describe the tendency of an object to resist a change in motion?

A. Force
B. Inertia
C. Mass
D. Velocity

11. Which of the following situations apply the Law of Inertia?

A. A man rowing a boat
C. A boy throwing a ball.
B. Trina swimming in a pool
D. A runner reaching the finish line

12. What is the approximated speed of light in a vacuum?
A. 3x10 m/s
B. 3x10 m/s
C. 3x1010 m/s
D. 3x102 m/s

13. What term refers to the bending of light as it travels from one medium to another of
different optical densities?

A. Refraction
B. Reflection
C. Reverberation D. Dispersion

14. When white light is dispersed, colors are hierarchically arranged as

A. Blue, indigo, green, orange, red, violet and yellow
B. Green, violet, red, yellow, blue, indigo and orange
C. Red, orange, yellow, green, blue, indigo and violet
D. Violet, indigo, blue, green, yellow, orange and red