Speed, Velocity and Acceleration
Newton Laws
Mass vs Weight
Forces
Problems
100
What is the unit for speed?
What is distance/time?
miles/hour
meters/sec
100
An apple sitting on a table
What is Newton's 1st Law?
100
Your mass is always the same, but this will change based on your location.
What is weight?
100
Raul balanced two pens on top of each other, end-to-end, on his desk. He then left the room to have lunch. When he returned, the pens had fallen down. Which of the following must have happened?
An unbalanced net force acted upon the pens.
100
If an object goes from 60 mph to 20 mph in 5 seconds, what is its acceleration?
-8 mph/s
200
Compare the graphs shown below.
In which graph does the velocity change?
W, X, and Y only
200
A soccer ball being kicked
What is Newton's 2nd Law
200
This magic number indicates the average downward pull of gravity on all objects on Earth.
What is 9.80?
200
A soccer player applies a force of 61.5 N to a soccer ball while kicking it. If the ball has a mass of 0.41 kg, what is the acceleration of the soccer ball?
150 m/s2
200
Sally is going shopping with her friend Susan at the mall, which is located 10 kilometers away from her house. She drives halfway to the mall and then realizes that she forgot her purse at home. She immediately turns around, goes back home to get her purse, and then drives directly from her house to the mall. What is the total distance that Sally traveled?
20 km
300
What is the difference between speed and velocity?
Speed is velocity with direction.
300
Newton's __________ law of motion states that "For every action there is an equal and opposite reaction."
What is Newton's 1st Law?
300
The masses of two objects is an important factor in determining the force of gravity between the two objects, this is the other important factor.
What is distance between them?
300
A water skier is pulled by a net force of 162 N and has an acceleration of 1.8 m/s2. What is the mass of the skier?
90 kg
300
How long would it take to travel 110 miles at a speed of 40 mph?
2.75 hours
400
A racecar's velocity changes from 0 m/s to 50 m/s in 5 seconds. What is the cars acceleration?
10 meters/ second ^2
400
A baseball being tossed straight up and caught
What is Newton's 3rd law?
400
During free fall, an objects velocity is _______
What is increasing?
400
Tendency of an object to continue in its current state of motion.
What is inertia?
400
An object with an initial velocity of 29 m/s has a final velocity of 49 m/s after 10 seconds.
What is the object's acceleration?
2 m/s2
500
An airplane maintains a velocity of 150 miles/hour due east. After 10 minutes it begins its descent at a velocity of 90 miles/hour due southwest. What it its acceleration?
What is (-)6 m/h^2 ?
NEGATIVE
500
Newton's _________ law of motion states that "The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object."
2nd
500
Weight= ?
MxA
500
A box of mass 6.1 kg is placed on a table that has a frictionless surface. The applied force on the box is 19 N. What is the acceleration of the box?
3.1 m/s2
500
Derek runs 4 laps around the track. If each lap around the track is 0.25 miles long, and he starts and stops in the same location, what is Derek's displacement?
1.0 miles