Physics Quiz

Which of the following is the only force that acts on a freely falling object?

• Air resistance

• Gravity

• Velocity

• Wind velocity

In a dart competition, a dart was protected at different angles with the same initial speed, neglecting air friction, which angle below Will make a successful horizontal longer trajectory?

• 15°

• 35°

• 45°

• 60°

What will happen to the horizontal distance (range) of a projectile as the angle gets closer to 45° angle?

• The range of the projectile increases

• The range of the projectile decreases

• The range of the projectile remains the same

• The range become zero

Which of the following statements applies to the motion of a ball rising and then falling in free fall?

• D. I, II, and III

• II the ball has constant acceleration at the top of it's path

• l tge ball has constant acceleration as it moves upward

• III the ball has constant acceleration as it moves downward

• A.I only

How high is the window of the condominium?

• A. 9.8 m

• B. 19.6 m

• C. 40.2m

• D. 44.1 m

What is the speed of the stone as it hits the ground?

• 14.7 m/s

• 29.4 m/s

• 40.2 m/s

• 44.2 m/s

A batang pinoy athlete from your school throws a javelin, always at the same speed, at four different angles ( 30°, 40°, 60°, and 80°) above the horizontal. Which two throws cause the javelin to lang on the same distance?

• 30 and 80

• 40 and 80

• 30 and 60

• 40 and 60

A ball is thrown into the air at some angle. At the very top of the balls path it's velocity is

• Entirely horizontal

• Entirely vertical

• Both vertical and horizontal

• Cant easily be determined

In the absence of air resistance, the angle at which a thrown ball will do the farthest?

• 15

• 45

• 30

• 60

A projectile is fired straight upward at 100 m/s. How fast is it moving at the instant it reaches the top of it's trajectory?

• -9.8 m/s

• 9.8 m/s

• 0 m/s

• 19.6 m/s