Projectile Motion Basics

What is projectile motion?

• Projectile motion is the motion of an object that is thrown into the air and is subject to the force of gravity, following a curved path called a trajectory.

• Projectile motion is the motion of an object that moves in a straight line without any external forces acting on it.

• Projectile motion is the motion of an object that is dropped from a height and falls straight down due to gravity.

• Projectile motion is the motion of an object that is pushed along a surface with constant speed.

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What happens to the velocity of a projectile at the peak of its trajectory?

• The velocity is at its maximum.

• The vertical component of the velocity is zero.

• The horizontal component of the velocity is zero.

• The velocity increases continuously.

What is the principle of conservation of energy in projectile motion?

• In projectile motion, mechanical energy is conserved; potential energy at the highest point is equal to the kinetic energy at launch.

• In projectile motion, energy is lost due to air resistance and is not conserved.

• In projectile motion, kinetic energy is always greater than potential energy.

• In projectile motion, total energy increases as the projectile rises.

What is the range of a projectile?

• The vertical distance a projectile travels before landing.

• The horizontal distance it travels before landing.

• The maximum height reached by a projectile.

• The time it takes for a projectile to land.

How does air resistance affect projectile motion?

• Air resistance has no effect on projectile motion.

• Air resistance increases the range of the projectile.

• Air resistance opposes the motion of the projectile, reducing its range and altering its trajectory.

• Air resistance causes the projectile to move in a straight line.

What is the horizontal component of velocity in projectile motion?

• It increases throughout the flight.

• It decreases due to air resistance.

• It remains constant throughout the projectile's flight, assuming no air resistance.

• It varies depending on the angle of launch.

What is free fall?

• Free fall is the motion of an object when the only force acting on it is gravity, causing it to accelerate downwards.

• Free fall occurs when an object is thrown upwards and then falls back down due to gravity.

• Free fall is when an object moves horizontally without any vertical motion.

• Free fall is the motion of an object in a vacuum where air resistance is present.

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What is the acceleration due to gravity on Earth?

• 8.9 m/s²

• 9.8 m/s²

• 10.5 m/s²

• 9.0 m/s²

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What is the effect of launch angle on projectile motion?

• The launch angle has no effect on projectile motion.

• A higher launch angle always results in a longer range.

• A 45-degree angle typically provides the maximum range.

• The launch angle only affects the time of flight.

What is the shape of the trajectory of a projectile?

• A straight line

• A circle

• A parabola

• An ellipse