Quarterly Assessment in Science

Which statement below is TRUE about uniformly accelerated motion in the horizontal dimension?

• The object travels on a flat surface with the influence of gravity.

• It refers to the motion of an object that experiences a constant acceleration in the horizontal direction without any vertical motion.

• A car accelerates on a flat road and motion is purely in the vertical plane.

• A block of wood is falling neglecting air resistance.

How would you describe the vertical dimension of uniformly accelerated motion (UAM)?

• It refers to the motion of an object along the vertical axis, which is perpendicular to the surface of the Earth.

• It refers to the motion of an object along the horizontal axis, which is perpendicular to the surface of the Earth.

• It is the movement of objects at a specific angle.

• When the object is thrown upward, it will not decelerate until it stops at maximum height.

Which of the following best describes the two main motions of a projectile?

• Vertical and Circular motions

• Horizontal and Circular motions

• Horizontal and Vertical motions

• Centripetal and Vertical motions

A baseball is thrown at a distance of 50 meters. Neglecting air resistance, which of the following statements would be INCORRECT when the ball reaches the highest point?

• All the balls’ original kinetic energy has been changed into potential energy.

• The ball’s horizontal velocity is the same as when it is released from the athlete’s hand.

• The ball will have been in the air one-half of its total flight time.

• The vertical component of the velocity is equal to zero.

If the baseball and a cannonball are dropped from the same height neglecting air resistance. Which ball will hit the ground first?

• The cannonball lands first

• The baseball lands first

• The balls land at the same time

• The ball with a larger volume will land first

Below are the factors that affect the projectile motion EXCEPT ONE. Which of the choices below is not included?

• Air resistance

• Gravity

• Angle and Height of release

• mass/weight of object

Explain why a crumpled sheet of paper hits the ground first than a flat sheet of paper.

• The crumpled paper is more massive

• The crumpled paper is less massive

• The acceleration of gravity is greater on the crumpled paper

• There is more resistance against the flat paper

From rest, an airplane accelerates uniformly over a time of 4 seconds and covers a distance of 15 meters. What is the acceleration of the airplane?

• 1.89 m/s²

• 1.87 m/s²

• 2.89 m/s²

• 2.87 m/s²

Predict the velocity of a stone at the highest point when thrown straight upward.

• 9.8 m/s²

• -9.8 m/s²

• 0 m/s

• 2 m/s

Neglecting air resistance and with the same speed of release, which angle of release does the ball go farthest?

• 65°

• 35°

• 90°

• 45°