Newton's Laws of Motion (Video Notes)

Fill-in-the-blank flashcards covering Newton's laws, forces, motion, momentum, and related concepts.

An object at rest will remain at rest unless acted on by a net __ force.

unbalanced force

An object in motion will continue in motion unless acted on by a net __.

force

For a 10 kg mass, the weight W on Earth is W = m g = __ Newtons.

98 Newtons

The normal force on a resting block equals the weight, so N = __.

98 Newtons

If the net force on a box is zero, the box's acceleration is __.

zero

Newton's second law is written as F = __.

ma (mass times acceleration)

Acceleration is the rate of change of velocity, defined as Δv/Δt, which is the change in velocity divided by the __.

time

Momentum is defined as p = __.

mv (mass times velocity)

The impulse-momentum relation states that the impulse equals the __ in momentum.

change

Newton's third law states that for every action there is an equal and opposite __.

reaction

In space, when you throw a ball to the right, you move in the opposite direction to the __.

ball

On a frictionless surface, a 10 kg block with a 200 N force has acceleration a = F/m = __ m/s^2.

20

The distance traveled under constant acceleration from rest for time t is d = vi t + 1/2 a t^2; if vi = 0, then d = __.

1/2 a t^2

Speed is a __ quantity.

scalar

Velocity is a __ quantity.

vector

If net force is zero, velocity is __ (constant).

constant