Forces and Newton's Law

Front

What should you do if you start sliding on wet roads?

Back

Put the car in neutral; it will go in the same direction with no external force. Apply brakes gently to decelerate the car slowly.

Front

What does Newton's 2nd law of motion state?

Back

The acceleration of an object depends on the net force acting on it and its mass.

Front

If a person weighs 100 pounds in an elevator at rest, how much will they weigh just before the elevator stops on the 6th floor?

Back

Less than 100 pounds.

Front

Why does a person weigh less than 100 pounds on a scale before reaching the 6th floor?

Back

An object stays in motion, so you keep going and squeeze the scale less.

Front

When is the net force of an object equal to 0?

Back

When the object is moving at a constant speed.

Front

What is the formula for calculating force?

Back

Force = Mass x Acceleration (F = m * a).

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 weight?

Back

Weight is the force exerted by gravity on an object, calculated as Weight = Mass x Gravity.

Front

What happens to the weight of an object in free fall?

Back

The weight remains the same, but the object experiences weightlessness due to the lack of normal force.

Front

What is the effect of friction on motion?

Back

Friction opposes the motion of an object, causing it to slow down or stop.