SPS8 Review

Front

What happens to your weight if Earth's mass is cut in half?

Back

Your weight decreases because gravitational force decreases.

Front

What does a magician demonstrate when he yanks the tablecloth off without moving the dishes?

Back

Newton's 1st Law of Motion.

Front

Why does a car accelerate when rounding a corner at constant speed?

Back

Its direction changes.

Front

What is the fixed point upon which a lever rotates?

Back

Fulcrum.

Front

What is the motion of a car that is slowing down?

Back

The car is decelerating.

Front

What is gravitational force?

Back

The force that attracts two bodies towards each other, proportional to their masses.

Front

What is Newton's 2nd Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is the formula for calculating weight?

Back

Weight = mass × gravitational acceleration (W = mg).

Front

What is the difference between speed and velocity?

Back

Speed is scalar (magnitude only), while velocity is vector (magnitude and direction).