Unit 5 (Forces) Test Corrections

Front

What do simple machines reduce by increasing the distance?

Back

Force

Front

Which two bowling balls will have the greatest gravitational force between them?

Back

Two 20 kg bowling balls, 1m apart

Front

What is the formula for calculating velocity?

Back

v = d/t

Front

How is velocity different from speed?

Back

Velocity has a direction; speed does not.

Front

What is the velocity of a plane that flew 2000 kilometers in 5 hours?

Back

400 km/hr West

Front

What is the relationship between force, mass, and acceleration?

Back

F = m * a (Newton's Second Law)

Front

What is gravitational force?

Back

The force of attraction between two masses.

Front

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

Back

Newton (N)

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object; weight is the force of gravity on that mass.

Front

What is kinetic energy?

Back

The energy of an object due to its motion.