Newton's Law test review

Front

What is the force that the head of a hammer must resist when driving nails?

Back

The force of the nail pushing in the opposite direction.

Front

Define force in physics.

Back

Any interaction that changes the motion of an object (a push or a pull).

Front

What are unbalanced forces?

Back

Two individual forces that are not equal, and the object's motion changes.

Front

Calculate the force produced by a pickup truck with a mass of 4500 kg that accelerates at 2 m/s².

Back

9000 N (Force = mass x acceleration).

Front

What is inertia?

Back

The resistance of any physical object to change its state of motion.

Front

What is the relationship between mass and force in Newton's second law?

Back

Force is equal to mass times acceleration (F = m x a).

Front

What happens to an object when balanced forces act on it?

Back

The object's motion does not change.

Front

How does increasing mass affect acceleration if the force remains constant?

Back

Increasing mass decreases acceleration.

Front

What is the effect of gravity on an object in free fall?

Back

Gravity pulls the object downward, accelerating it towards the Earth.

Front

What is the formula for calculating force?

Back

Force = mass x acceleration (F = m x a).