Q4 Science 9 Reviewer

As a projectile moves upwards, how does its vertical velocity change?

• a. Increases

• b. Decreases

• c. Remains constant

• d. Reverses direction

The velocity of a projectile when it returns to its initial height is:

• a. Equal to its initial velocity

• b. Greater than its initial velocity

• c. Less than its initial velocity

• d. Zero

Which of the following statements about impulse is true?

• a. Impulse is a vector quantity

• b. Impulse is always negative

• c. Impulse is the change in momentum of an object

• d. Impulse is not related to force

What is the shape of the projectile's trajectory without air resistance?

• a. Parabolic

• b. Elliptical

• c. Circular

• d. Linear

How does increasing the launch angle of a projectile affect its range?

• a. Increases

• b. Decreases

• c. No effect

• d. Changes erratically

An object with a large momentum has:

• a. High speed

• b. Low speed

• c. Variable speed

• d. No mass

Which of the following statements about projectile motion is correct?

• a. Horizontal and vertical motions are dependent

• b. The object only moves horizontally after launch

• c. Vertical acceleration is not influenced by gravity

• d. Launch speed has no impact on range

The acceleration of a projectile is due to:

• a. Gravity only

• b. Air resistance

• c. Horizontal forces

• d. Vertical forces

When is the momentum of a system conserved?

• a. During a collision

• b. In the presence of friction

• c. When external forces are present

• d. In everyday situations

What is the velocity of a projectile at the highest point of its trajectory?

• a. Zero

• b. Maximum

• c. Constant

• d. Minimum