2nd Law review

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. (F = ma)

Front

How do you calculate force?

Back

Force (F) is calculated using the formula F = ma, where m is mass and a is acceleration.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force is the Newton (N).

Front

What is the definition of weight?

Back

Weight is the measure of the pull of gravity on an object, calculated as W = mg, where m is mass and g is the acceleration due to gravity.

Front

If an object has a mass of 10 kg and is accelerating at 5 m/s², what is the force acting on it?

Back

50 Newtons (F = ma = 10 kg * 5 m/s²).

Front

What happens to the weight of an object if it is taken to a place with lower gravity?

Back

The weight of the object decreases because weight is dependent on the gravitational pull.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object and does not change regardless of location, while weight is the force of gravity acting on that mass.

Front

How do you find the net force when multiple forces are acting on an object?

Back

Net force is found by vector addition of all the individual forces acting on the object.

Front

If a 5 kg object experiences a net force of 20 N, what is its acceleration?

Back

4 m/s² (a = F/m = 20 N / 5 kg).

Front

What is the gravitational acceleration on Earth?

Back

Approximately 9.81 m/s².