Newton's 2nd Law

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 with the formula F = ma, where F is the net force, m is the mass, and a is the acceleration.

Front

How do you calculate acceleration using Newton's 2nd Law?

Back

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

Front

If a car has a mass of 1500 kg and a net force of 3000 N acting on it, what is its acceleration?

Back

Using the formula a = F/m, the acceleration would be a = 3000 N / 1500 kg = 2 m/s².

Front

What happens to the acceleration of an object if the net force acting on it is doubled?

Back

If the net force is doubled while the mass remains constant, the acceleration will also double, according to Newton's 2nd Law.

Front

What is the relationship between mass and acceleration when a constant force is applied?

Back

When a constant force is applied, an increase in mass will result in a decrease in acceleration, and vice versa.

Front

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

Back

The unit of force in the SI system is the Newton (N), which is defined as kg·m/s².

Front

If an object experiences a net force of 0 N, what can be said about its acceleration?

Back

If the net force is 0 N, the object's acceleration is also 0 m/s², meaning it is either at rest or moving at a constant velocity.

Front

True or False: 1 Newton is equivalent to 1 kg·m/s².

Back

True. 1 Newton is defined as the force required to accelerate a 1 kg mass by 1 m/s².

Front

How does increasing the mass of an object affect the force required to achieve a certain acceleration?

Back

Increasing the mass of an object requires a greater force to achieve the same acceleration, as per the formula F = ma.

Front

What is the effect of friction on the net force acting on an object?

Back

Friction opposes the motion of an object and reduces the net force acting on it, which can affect its acceleration.