Math in Science
Newton's 1st Law
Vocabulary
Newton's 2nd Law
Newton's 3rd Law
100
Finn runs across the playground. He is able to run 100 feet in 5 seconds. Determine his rate of SPEED.
What is 20 feet per second?
100
Why does a passenger in a car continue moving forward when the car suddenly stops? Use proper terminology.
Inertia causes the body to resist change in motion. The person's body continues to move until it meets and unbalanced force.
100
The distance covered in a given amount of time.
What is SPEED
100
Provide an example of Newton's Second Law.
Pushing a car; the more force you apply, the faster it accelerates. a=f/m e.g. a= 700N/1,000kg = .7 m/s2 a= 1200N/1,000kg = 1.2 m/s2
100
A swimmer pushes the water backward with her hands. What direction will the swimmer move?
The swimmer moves forward.
200
Holt walked across the classroom to turn in his morning work. He walked to the turn in tray and came back to his seat. The distance from his seat to the turn in tray is 15 feet. The total trip took him 6 seconds. What is his rate of speed?
30 Feet / 6 seconds = 5 feet per second
200
What is Newton's First Law?
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.
200
A push or a pull.
What is FORCE?
200
A soccer ball has a mass of 0.25 kg and accelerates at 8 m/s². What is the net force acting on the ball?
f=m*a, mass=.25kg, acceleration=8m/s2 f=.25kg * 8m/s2
f=2N
200
Identify the action and reaction forces when a bird perches on a fence post.
Action: Gravity and the bird pushes down; Reaction: Post pushes up on bird
300
How will this object move?
20N to the right
300
Describe a real to life situation in which an object remains at rest because the forces are balanced.
e.g. A book resting on a table has gravity and normal forces balanced.
300
A change in position.
What is MOTION?
300
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
60 N right
300
Two rockets have the same mass, but Rocket A has twice the force applied. Which will have greater acceleration?
Rocket A
400
Jack watched a grasshopper hop across the blacktop at recess. He traveled 10 meters in 2 minutes. What is the grasshoppers rate of speed?
10 meters/ 2 minutes= 5 meters per minute
400
Explain what happens to an object when forces are unbalanced.
The object moves or has a change in motion.
400
Forces that are equal in strength, but opposite in direction. They cancel each other out and do NOT cause a change in motion.
What are BALANCED FORCES?
400
A 6kg box is pushed with a force of 30N. What is the acceleration? Provide your answer in m/s2
a=f/m, force=30N, mass=6kg a=30N/6kg
a= 5m/s2
400
When you jump forward off a skateboard into the grass, the skateboard moves backward. Why?
Because you push on the skateboard and the Skateboard pushes back on you.
500
Bronson ran from home plate to first base (60 feet) in 5 seconds. What was his rate of speed?
60 feet/ 5 seconds= 12 feet per second
500
What unit is force measured in?
Newtons
500
Forces that cause a change in motion because they do not cancel each other out.
What are UNBALANCED FORCES?
500
A rocket has a mass of 5,000kg and engines with 120,000N of thrust. What is the rocket's acceleration at takeoff? Your answer must be in m/s2
a=f/m, force=120,000N, mass=5,000kg
a=120,000N / 5,000kg
a=24m/s2
500
What does Newton's Third Law state?
For every action, there is an equal and opposite reaction.