Unit 3 Test Review

Front

What does it mean for horizontal forces to be balanced?

Back

When horizontal forces are balanced, the net force acting on an object is zero, meaning the object will not accelerate in the horizontal direction.

Front

What type of energy is stored in a drawn back archer's bow?

Back

Potential energy.

Front

What is the force that attracts objects with mass towards each other?

Back

Gravity.

Front

When does chemical potential energy from food become kinetic energy?

Back

When we use the energy to perform activities, such as running.

Front

What forces act on a softball when it is hit by a bat?

Back

An applied force from the bat and gravitational force pulling it down.

Front

Define potential energy.

Back

Potential energy is the energy stored in an object due to its position or state.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object in motion.

Front

What is the relationship between mass and gravitational force?

Back

The gravitational force between two objects increases with greater mass.

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.

Front

What happens to the potential energy of an object as it falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.