Force and Motion Review

Front

What are balanced forces?

Back

Balanced forces are two or more forces acting on an object in opposite directions, resulting in a net force of zero. This means the object will not accelerate.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) is calculated using the formula: a = F/m, where F is the net force applied to the object and m is its mass.

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed as F = m x a.

Front

How do you calculate average speed?

Back

Average speed is calculated using the formula: speed = distance/time (s = d/t).

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object and is calculated as weight = mass x gravity (W = mg).

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the effect of unbalanced forces on an object?

Back

Unbalanced forces cause an object to accelerate in the direction of the net force.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula: PE = mgh, where m is mass, g is the acceleration due to gravity (approximately 9.8 m/s²), and h is height.