acience motion

What are unit conversions between km and m?

1 km = 1000 m.

What are unit conversions between m and cm?

1 m = 100 cm.

What are unit conversions between cm and mm?

1 cm = 10 mm.

What are unit conversions between h, min, and s?

1 h = 60 min = 3600 s.

What are unit conversions between km/h and m/s?

1 km/h = 0.27778 m/s.

What are unit conversions between μm and nm?

1 μm = 1000 nm.

What defines a scalar?

A quantity that has magnitude only, such as distance, time, speed, and mass.

What defines a vector?

A quantity that has both magnitude and direction, such as displacement, velocity, acceleration, and force.

How do you add vectors in the same direction?

Sum the magnitudes of the vectors to find the resultant vector.

How do you subtract vectors in opposite directions?

Subtract the smaller vector's magnitude from the larger vector's magnitude and keep the direction of the larger vector.

What does the formula v = Δd / Δt represent?

The formula for calculating velocity, where Δd is the change in distance and Δt is the change in time.

What does the formula a = Δv / Δt represent?

The formula for calculating acceleration, where Δv is the change in velocity and Δt is the change in time.

What does a positive slope indicate on a position-time graph?

A positive slope indicates positive velocity, meaning the object is moving in a positive direction.

What is the displacement formula?

Δd = viΔt + ½a(Δt)², where vi is the initial velocity, a is acceleration, and Δt is the time duration.

What is net force?

The total force acting on an object, determined by adding forces in the same direction and subtracting those in opposite directions.

What is Newton's First Law (Inertia)?

An object remains at rest or in motion unless acted upon by an unbalanced force.

What does Newton's Second Law state?

Force equals mass times acceleration (F = ma), illustrating the relationship between these three quantities.

What is Newton's Third Law?

For every action, there is an equal and opposite reaction.