Name: Period: Date:

Newton’s First and Second Laws Review

Balanced and Unbalanced Forces

Balanced Forces Unbalanced Forces

For each object below, determine whether the forces acting on the object are balanced or unbalanced, and determine the net force acting on the object.

Balanced or unbalanced? Balanced or unbalanced? Balanced or unbalanced?

Fnet = Fnet = Fnet =

Balanced or unbalanced? Balanced or unbalanced? Balanced or unbalanced?

Fnet = Fnet = Fnet =

Newton’s First Law of Motion

=

Newton’s Second Law of Motion

1. A car is accelerating at 5 m/s2. The car has a mass of 1000 kg. What is the force that is pushing the car?

2. Kristopher pushes with 150 N of force on a box with a mass of 50 kg. At what rate does the box accelerate?

3. Tylesia pushes Mr. D with a force of 240 N. Mr. D accelerates forward at a rate of 3 m/s2. What is Mr. D’s mass?

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Fnet = ma

Relationships in F = m a

net force (Fnet) acceleration (a) [Greater force will cause faster acceleration.]

Fnet = Fnet =

m = m =

a = a =

mass (m) acceleration (a) [A heavier mass will accelerate slower if pushed with the same force.]

Fnet =

m =

a =

Fnet =

m =

a =

mass net force (Fnet) [A heavier mass will require more force to accelerate at the same speed.]Big Sumo : Little Sumo:m = m = a = a =

Fnet = Fnet =