Practice-Newtons Laws 2021

Front

What does Newton's 3rd Law of Motion state?

Back

For every action, there is an equal and opposite reaction.

Front

What is the formula for calculating force according to Newton's 2nd Law of Motion?

Back

F = ma (Force equals mass times acceleration).

Front

What is the weight of an object with a mass of 5 kg under the influence of gravity (9.8 m/s²)?

Back

The weight is 49 N (Weight = mass x gravity).

Front

How does acceleration affect the reading on a scale in an elevator?

Back

If the elevator accelerates upward, the scale reads more than the normal weight; if it accelerates downward, it reads less.

Front

What is the definition of applied force?

Back

Applied force is the force exerted by a person or object that pushes or pulls on another object.

Front

What is the force of gravity acting on a 10 kg object?

Back

The force of gravity is 98 N (Weight = mass x gravity, where gravity is approximately 9.8 m/s²).

Front

What happens to the motion of an object when the net force acting on it is zero?

Back

The object remains at rest or continues to move at a constant velocity.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

Mass and acceleration are inversely related; as mass increases, acceleration decreases for a constant force.

Front

What is an example of Newton's 3rd Law in everyday life?

Back

When you jump off a small boat, you push the boat backward as you move forward.