Science: Matter and Energy - Chapter 3 Test 2

Front

What is the general formula for mechanical advantage under ideal conditions?

Back

Front

What type of motion is similar to that of a pendulum?

Back

Pendulum motion is characterized by swinging back and forth from a fixed point.

Front

If a character pushes a boulder with a force of 35 N to the left and another character pushes it with 26 N to the right, what is the net force?

Back

9 N to the left.

Front

What quantity represents the change in position of an object?

Back

Displacement.

Front

What type of quantity measures only magnitude, such as the size of an object?

Back

Scalar.

Front

What is the formula for calculating power?

Back

Front

Define mechanical advantage.

Back

Mechanical advantage is the ratio of the output force to the input force in a machine.

Front

What is the difference between scalar and vector quantities?

Back

Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.

Front

What is the formula for efficiency in a machine?

Back

Front

What does displacement measure in physics?

Back

Displacement measures the shortest distance from the initial to the final position of an object.