Vocabulary
For every action, there is an equal and opposite reaction.
[DAILY DOUBLE]
Newton's 3rd law of motion
True or False:
Forces that are equal in size but opposite in direction are called unbalanced forces. _______________
False
What are the units for speed?
meters per second (m/s)
When two forces act in the same direction on an object, the net force is found by ____________the forces. (INCLUDE ALL UNITS)
Adding
How many assignments should be in your science notebook?
8
Force = Mass x Acceleration.
Newton's 2nd law of motion
True or False:
If a net force acts on an object, the object may change speed, change direction or do neither.
True
What is the constant for Gravitational Acceleration?
9.8 m/s2
If you move 10000 meters in 100 seconds, what is your speed? (INCLUDE ALL UNITS)
100 m/s
What is the total change in position of an object?
Displacement
Is equal to the gravitational force acting on it only when the object is resting on a horizontal surface.
Normal Force
Acceleration depends on which two factors?
A) mass and position
B) net force and mass
C) mass and velocity
C) mass and velocity
What is the average velocity formula?
velocity = change of speed/ change of time
[DAILY DOUBLE]
A car is said to go "zero to sixty in six seconds". What is its acceleration in m/s²? (INCLUDE ALL UNITS)
10 m/s2
True or false:
If you throw a ball into the air, Earth exerts a force on the ball. The ball in the air exerts no force on Earth.
True
The energy of motion.
Kinetic Energy
If the mass of one of two spheres increases, how does it affect the gravity between the two spheres?
A) The gravity increases.
B) The gravity decreases.
C) The gravity fluctuates.
A) The gravity increases.
What does one Newton equal?
1N = (1kg)*(1m/s2)
A cat is pushing a dog on a scooter. The cat pushes 85 N of force to the left, and the dog is helping with 40 N to the left. What is the net force on the scooter? (INCLUDE ALL UNITS)
125 N to the left
You move 100 meters north, then 50 meters south, what is your displacement? Using your displacement, what is your velocity, if only 4 seconds has passed? (INCLUDE ALL UNITS)
12.5 m/s North
A force that is applied to an object by a person or another object.
Applied Force
Pick the best example of Newton’s third law of motion in action. [DAILY DOUBLE]
A) A rocket accelerating in space as a result of gases and the rocket pushing each other in opposite directions.
B) A rocket is towed to the launch pad while friction acts in the opposite direction.
C) An asteroid moving around the Sun while being pulled toward the Sun.
A) A rocket accelerating in space as a result of gases and the rocket pushing each other in opposite directions.
[DAILY DOUBLE]:
Draw a free body diagram of two people having a tug-of-war battle.
I will check ur responses
You walk to school from home, walk to the store, walk to the park, then walk back to the store, then, back to school, then back home. What is your final displacement?
0
DAILY DOUBLE
A 5000kg car moving at 20m/s accelerates to 35m/s in 6 seconds. What is the force applied to the car?
12500 N