Physics 7 Pre-Comp Review

Front

What is gravitational force?

Back

Gravitational force is the attraction between two objects due to their mass. It is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

How does distance affect gravitational force?

Back

The gravitational force decreases as the distance between two objects increases. Specifically, if the distance is halved, the force increases by a factor of four.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be positive (speeding up) or negative (slowing down).

Front

What is the relationship between velocity and acceleration?

Back

If an object has a negative velocity and positive acceleration, it is slowing down. If both are in the same direction, the object is speeding up.

Front

What is normal force?

Back

Normal force is the support force exerted upon an object that is in contact with another stable object. It acts perpendicular to the surface.

Front

How do you calculate weight?

Back

Weight is calculated using the formula: Weight = mass × acceleration due to gravity (W = mg).

Front

What is average velocity?

Back

Average velocity is the total displacement divided by the total time taken. It can be positive or negative depending on the direction of displacement.

Front

How do you find instantaneous velocity?

Back

Instantaneous velocity is the velocity of an object at a specific moment in time, often calculated using the formula: v = v_i + at.

Front

What is the formula for calculating gravitational force?

Back

The formula for gravitational force is F = G(m_1 * m_2) / r^2, where G is the gravitational constant, m_1 and m_2 are the masses, and r is the distance between their centers.

Front

What does a negative average velocity indicate?

Back

A negative average velocity indicates that the object has moved in the opposite direction from the reference point.