Newton's Second Law

Front

What is Newton's Second Law of Motion?

Back

Newton's Second 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 with the formula F = ma.

Front

What does the formula F = ma represent?

Back

F = ma represents the relationship between force (F), mass (m), and acceleration (a). It shows that force equals mass times acceleration.

Front

If a 20 kg bike accelerates at 10 m/s², what is the force applied?

Back

200 Newtons.

Front

How do you calculate acceleration using force and mass?

Back

Acceleration can be calculated using the formula a = F/m, where F is the force applied and m is the mass of the object.

Front

What is the mass of a golf ball if a force of 15 N causes it to accelerate at 25 m/s²?

Back

0.6 kg.

Front

Define Balanced Forces.

Back

Balanced forces are two forces acting in opposite directions on an object, and they are equal in size, resulting in no change in motion.

Front

What happens when forces are unbalanced?

Back

When forces are unbalanced, the object will accelerate in the direction of the net force.

Front

If a force of 20 N is applied to a mass of 5 kg, what is the acceleration?

Back

4 m/s².

Front

How much force is needed to accelerate a 70 kg friend at 4 m/s²?

Back

280 Newtons.

Front

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

Back

The unit of force is the Newton (N).