Kinematics-Projectiles and Free Fall

Flashcards covering essential concepts in kinematics related to projectiles and free-fall motion.

What angle should a projectile be launched to achieve maximum time in the air?

90 degrees

What is the horizontal component of a projectile's velocity if launched at 250 m/s at a 60° angle?

125 m/s

What happens to the horizontal velocity of a projectile as it moves?

It remains constant.

What is the vertical component of a projectile's velocity at its peak height?

0 m/s.

How does the magnitude of the horizontal component of velocity compare at different points of a projectile's path?

It is the same at all points.

When a projectile is in motion, what force acts on it in the vertical direction?

Gravity.

What is the vertical acceleration of a projectile in free fall near Earth's surface?

9.81 m/s² downward.

What is the time it takes for a projectile thrown horizontally to hit the ground when dropped from a height?

The same regardless of the horizontal speed.

What happens to a ball's speed when it returns to the same height from which it was thrown?

It is the same as when it was thrown.

What is the maximum height reached by a projectile when it is thrown straight up?

It depends on the initial vertical speed.

Considering a projectile launched, how does vertical motion relate to horizontal motion?

They are independent of each other.

If a ball is thrown vertically upward, what is its speed at the maximum height?

0 m/s.

How does the horizontal distance traveled by a projectile change as the launch angle increases?

It increases until 45°, then decreases.

When a rock is dropped from a height, what is the speed after falling a specific distance?

It is calculated using the equation v = √(2gh).

What is the maximum height reached by an object thrown upwards calculated with initial velocity?

Use the formula: (initial velocity²) / (2 × g).

How does air resistance affect projectile motion?

It causes the actual trajectory to be lower and shorter than the ideal path.

What is the relationship between acceleration and time for a freely falling object?

It remains constant at 9.81 m/s².

What shape describes the path of a projectile?

Parabolic trajectory.

If two objects are thrown horizontally from the same height, how do their fall times compare?

They hit the ground at the same time.

What happens to the time of flight when a projectile's launch angle is increased?

Time of flight increases until the angle reaches 45°.

What is a factor that determines the horizontal range of a projectile?

The launch angle and initial velocity.

What effects do launch angle and speed have on projectile motion?

They affect the time in the air and the range.

What is the total distance an object falls in free fall after a certain time?

Calculated using the distance formula: d = 1/2 g t².