Unit 4 Physics Review

Front

What is the formula to calculate the time it takes for an object to fall from a height?

Back

t = √(2h/g), where h is the height and g is the acceleration due to gravity (approximately 9.81 m/s²).

Front

What is the acceleration of a projectile in horizontal motion, assuming no air resistance?

Back

The acceleration is 0 m/s², meaning it moves with constant velocity.

Front

How do you calculate the horizontal distance (Δx) a projectile travels when it falls?

Back

Δx = v_horizontal * t, where v_horizontal is the horizontal velocity and t is the time of flight.

Front

What is the effect of friction on a cart rolling down an inclined plane?

Back

Friction opposes the motion of the cart, acting in the opposite direction to the movement.

Front

What is the definition of projectile motion?

Back

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

Front

What is the significance of a 5.0 m tall tower in projectile motion problems?

Back

It determines the time of flight and the vertical distance the projectile will fall.

Front

What does it mean for a ball to have a horizontal velocity of 2 m/s?

Back

It means the ball moves horizontally at a constant speed of 2 meters per second.

Front

What is the role of gravity in projectile motion?

Back

Gravity accelerates the projectile downwards at approximately 9.81 m/s², affecting its vertical motion.

Front

How do you determine the missing side of a right triangle?

Back

Use the Pythagorean theorem: a² + b² = c², where c is the hypotenuse.

Front

What is the relationship between height and time of fall in free fall?

Back

The time of fall increases with the square root of the height from which the object falls.