Laws of Motion

1. Why would a ball thrown up in the air fall to the ground?

• A. The unbalanced force acting on the ball is towards the ground.

• B. The unbalanced force acting on the ball is going up.

• C. The balanced force pulls it to the ground.

• D. There is no force pushing it upward.

2. It is commonly exerted by way of a push or a pull on an object. What is it?

• A. energy

• B. force

• C. power

• D. work

3. A balanced force acting on a body will result to

I. The object remains at rest.

II. The object moves with increasing speed

III. The object moves at constant speed in a straight line.

• A. I only

• B. II and II

• C. I and III

• D. I,II, and III

4.What could cause a ball rolling on the grass to stop?

• A. Mass of the ball

• B. Shape of the ball

• C. Friction between the ball and the grass

• D. No force is pushing the ball to continue rolling.

5.If an unbalanced force acts on an object, in what direction will the object move

to?

• A. To the left

• B. To the right

• C. To the direction of the lesser force

• D. To the direction of the greater force

6. It is the rate of change in the object’s motion measured in m/s2?

• A. Acceleration

• B. Force

• C. Mass

• D. Power

7. A car and a truck are running on the stretch of Rizal Avenue at the same speed towards a pedestrian crossing. Which of the two must exert a greater force if

suddenly a pedestrian has to cross the street?

• A. The smaller car needs smaller force to stop right away.

• B. The smaller car needs greater force to stop right away.

• C. The truck needs smaller force to stop right away.

• D. The truck needs bigger force to stop right away

8. Two balls, basketball and a golf ball are thrown to the air with the same amount

of force. Which will go farther?

• A. The basketball because it is bouncy.

• B. The basketball because it is bigger.

• C. The golf ball because it is lighter.

• D. The golf ball because it is smaller.

9. If you throw a stone upward, the stone goes up and eventually will go down.

What is the direction of the net force on the stone on its way up?

• A. upward

• B. downward

• C. sideward

• D. None of the choices

10. What effect on the acceleration does increasing the force applied on the body

have?

• A. The greater the force applied, the slower an object moves.

• B. The greater the force applied, the speed of the object is constant.

• C. The greater the force applied, the greater is the object’s acceleration.

• D. The greater the force applied, the greater the increase in the object’s mass

  and acceleration.