Review: Gravity & 1D Projectile Motion

Front

What is the speed of an object thrown straight up when it returns to the same height?

Back

The speed is the same as the initial speed when it returns to the same height, assuming no air resistance.

Front

What is a projectile?

Back

A projectile is any object that is thrown, dropped, fired, or otherwise propelled, and is subject to the force of gravity.

Front

What is the formula for calculating the time an object is in the air when thrown vertically?

Back

Time in the air = (2 * initial velocity) / g, where g is the acceleration due to gravity (approximately 9.8 m/s²).

Front

What is Newton's law of gravitation?

Back

Newton's law of gravitation states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the formula for Newton's law of gravitation?

Back

F = G * (m1 * m2) / r², where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers.

Front

What happens to the speed of a projectile at its highest point?

Back

At its highest point, the vertical speed of a projectile is zero, but it still has horizontal speed if it was launched at an angle.

Front

What is the acceleration of an object in free fall?

Back

The acceleration of an object in free fall near the Earth's surface is approximately 9.8 m/s² downward.

Front

What is the effect of air resistance on projectile motion?

Back

Air resistance opposes the motion of a projectile, reducing its speed and altering its trajectory.

Front

What is the relationship between mass and gravitational force?

Back

The gravitational force between two objects increases with greater mass and decreases with greater distance.

Front

What is the trajectory of a projectile?

Back

The trajectory of a projectile is the path it follows through space, typically a parabolic shape under the influence of gravity.