Checkpoint 4 review

Front

What is the acceleration due to gravity on Earth?

Back

9.81 m/s²

Front

How do you calculate the horizontal speed needed to hit a target from a certain height?

Back

Use the formula: horizontal speed = distance / time, where time can be calculated using the vertical drop and gravity.

Front

What is Newton's Law of Universal Gravitation?

Back

F = Gm₁m₂/r², where F is the gravitational force, G is the gravitational constant, m₁ and m₂ are the masses, and r is the distance between their centers.

Front

What factors can increase the time of flight of a projectile?

Back

Increasing the height from which it is thrown or reducing the initial vertical velocity.

Front

How does distance affect gravitational acceleration between two objects?

Back

The closer two objects are, the greater the gravitational acceleration between them.

Front

What is the formula for calculating the time of flight for an object in free fall?

Back

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

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force is directly proportional to the product of the masses of the two objects.

Front

What happens to the gravitational force if the distance between two objects is doubled?

Back

The gravitational force becomes one-fourth as strong.

Front

What is the significance of the gravitational constant (G)?

Back

It is a proportionality factor used in the calculation of gravitational force between two masses.

Front

How does throwing an object faster horizontally affect its flight time?

Back

It does not affect the time of flight; only the vertical height and gravity do.