Gravity and Projectile Motion (Ch. 7)

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between their centers.

Front

What is projectile motion?

Back

Projectile motion is the motion of an object thrown into the air, subject to the acceleration due to gravity, following a curved path called a trajectory.

Front

What is the formula for calculating the horizontal distance traveled by a projectile?

Back

Horizontal distance (d) = initial velocity (v) × time (t).

Front

How does air resistance affect projectile motion?

Back

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

Front

What is the effect of height on the time of fall for a projectile?

Back

The time of fall increases with height; the higher the object, the longer it takes to reach the ground.

Front

What is tangential velocity?

Back

Tangential velocity is the velocity of an object moving along a circular path, directed along the tangent to the circle at any point.

Front

What is the relationship between speed and velocity?

Back

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes both speed and direction.

Front

What is the formula for calculating the time of fall from a height?

Back

Time of fall (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 role of centrifugal force in satellite motion?

Back

Centrifugal force is perceived in a rotating reference frame; it helps maintain a satellite's orbit by balancing gravitational pull.

Front

What is the significance of initial velocity in projectile motion?

Back

Initial velocity determines the range and height of the projectile; higher initial velocity results in a longer horizontal distance.