MidTerm Exam Review #2

Front

What is the formula to calculate net force?

Back

Net Force (F) = Mass (m) × Acceleration (a)

Front

If a vehicle accelerates at 1.5 m/s² and the net force is 1,800 N, what is the mass of the vehicle?

Back

Mass = Net Force / Acceleration = 1,800 N / 1.5 m/s² = 1,200 kg

Front

What is the mass of a sledgehammer if a net force of 14 N is applied to accelerate it at 4.0 m/s²?

Back

Mass = Net Force / Acceleration = 14 N / 4.0 m/s² = 3.5 kg

Front

In which position is it winter in North America when Earth is tilted away from the sun?

Back

Position 4, because North America is tilted away from the sun.

Front

What is the effect of the relative positions of the Sun, Moon, and Earth on ocean tides?

Back

The positions affect the gravitational pull, leading to high and low tides.

Front

What is the significance of balanced chemical equations?

Back

They show that the number of atoms for each element is conserved in a reaction.

Front

What is the role of oxygen in chemical reactions?

Back

Oxygen is often a reactant in combustion and respiration reactions.

Front

How does the tilt of the Earth affect seasons?

Back

The tilt causes different parts of Earth to receive varying amounts of sunlight throughout the year.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

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

Back

Newton (N)