Projectile Motion Basics

What is the shape of the trajectory followed by a projectile in motion?

• ellipse

• square

• parabola

• circle

In projectile motion, does the horizontal velocity change?

• Only at the beginning

• Depends on the angle

• No

• Yes

What is the acceleration acting on a projectile in the vertical direction?

• 5.67 m/s^2 upward

• 0 m/s^2

• 3.14 m/s^2 downward

• 9.81 m/s^2 downward

How does air resistance affect the trajectory of a projectile?

• Air resistance causes the projectile to change direction mid-flight.

• Air resistance slows down the projectile, causing it to have a lower and shorter trajectory.

• Air resistance has no effect on the trajectory of a projectile.

• Air resistance speeds up the projectile, causing it to have a higher trajectory.

What is the initial velocity of a projectile launched at an angle of 30 degrees above the horizontal?

• The initial velocity of the projectile launched at an angle of 30 degrees above the horizontal is velocity * sin(30 degrees).

• The initial velocity of the projectile launched at an angle of 30 degrees above the horizontal is velocity / sin(30 degrees).

• The initial velocity of the projectile launched at an angle of 30 degrees above the horizontal is velocity / cos(30 degrees).

• The initial velocity of the projectile launched at an angle of 30 degrees above the horizontal is velocity * cos(30 degrees).

At what point in the projectile's motion is the vertical velocity equal to zero?

• At the midpoint of the projectile's motion.

• At the lowest point of the projectile's trajectory.

• At the highest point of the projectile's trajectory.

• At the starting point of the projectile's motion.

What is the formula to calculate the time of flight for a projectile?

• time of flight = (initial velocity^2 * sin(2 * angle of projection)) / acceleration due to gravity

• time of flight = (initial velocity * sin(angle of projection)) / acceleration due to gravity

• time of flight = (2 * initial velocity * sin(angle of projection)) / acceleration due to gravity

• time of flight = (2 * initial velocity * sin(angle of projection)) / (acceleration due to gravity)^2

How does the range of a projectile change with an increase in the launch angle?

• The range of a projectile initially increases with an increase in the launch angle up to a certain point, then decreases.

• The range of a projectile decreases with an increase in the launch angle

• The range of a projectile remains constant regardless of the launch angle

• The range of a projectile increases linearly with an increase in the launch angle

What is the relationship between the time of flight and the maximum height reached by a projectile?

• The time of flight decreases as the maximum height reached by a projectile increases.

• The time of flight is not affected by the maximum height reached by a projectile.

• The time of flight and the maximum height reached by a projectile are indirectly related through the initial velocity and launch angle of the projectile.

• The time of flight and the maximum height reached by a projectile are directly proportional.

Explain the concept of horizontal motion in projectile motion.

• Horizontal motion is the motion of the object perpendicular to the ground

• Horizontal motion changes due to gravitational pull

• Horizontal motion is only present in vertical projectile motion

• Horizontal motion in projectile motion is the motion of the object parallel to the ground, which remains constant due to the absence of horizontal forces.