8th Grade Final Topics (part 1)

Front

Energy due to motion is ____________ energy.

Back

Kinetic energy is the energy that an object possesses due to its motion.

Front

How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?

Back

To find the force, use Newton's second law: F = m * a. Here, F = 2 kg * 6 m/s² = 12 N.

Front

Which of the following laws is associated with motion?

Back

Newton's Laws describe the relationship between the motion of an object and the forces acting on it.

Front

Write 52,300,000 in scientific notation.

Back

52,300,000 in scientific notation is 5.23 x 10^7.

Front

Match the description to the graph: 'The car is stopped.'

Back

A graph showing a horizontal line at zero velocity indicates that the car is stopped.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state.

Front

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

Back

The unit of force is the Newton (N).

Front

What does Newton's first law state?

Back

Newton's first law states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by a net external force.

Front

What is the relationship between mass and acceleration in Newton's second law?

Back

In Newton's second law, the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma).