PS Unit 1 & 2 Test

Front

Cold things often have a _________ kinetic energy because_______

Back

lower; particles are moving around less

Front

Which of the following is the units for acceleration?

Back

m/sec²

Front

Any push or pull on an object.

Back

force

Front

It represents an idea, event, or object to help people observe or test it to better understand.

Back

model

Front

Which of Newton's laws most accurately explains the situation: A football on the ground will not move until someone kicks it?

Back

1st law

Front

What is the definition of acceleration?

Back

The rate of change of velocity of an object.

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 force?

Back

Force = mass × acceleration (F = ma)

Front

What does Newton's 2nd law state?

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 a variable in scientific experiments?

Back

A factor that can change in an experiment.