Momentum
Kinematics
Newton's Laws
Solve
Identify
100
A massive semi-truck and a small compact car are rolling down a hill at the exact same speed. Which vehicle has more momentum, and why?
the semi-truck has more mass, so it has more momentum
100
A turtle crosses an 8 meter wide road in 6 minutes. What was the average sped of the turtle in m/s?
0.02m/s
100
In the following example, what is the unbalanced force: A car is driving down the street, but comes to an abrupt stop when it hits a tree.
the tree
100
A turtle crosses an 8-meter-wide road in 6 minutes. What was the average speed of the turtle in m/s?
0.02m/s
100
What are the units for acceleration?
m/s2
200
Momentum is defined as this.
What is the product of mass and velocity, or in other words, inertia in motion.
200
You walk from your locker to the cafeteria, 50 meters in 25 seconds. What is your speed?
v=2 m/s
200
Newton's 3rd law states this, "For ...
"For every action there is an equal and opposite reaction."
200
You’re filming a TikTok while rolling on your scooter down the driveway at 5 m/s and travel 250 meters before stopping. How long did it take?
Is this a good idea?
t=50 s
No.
200
A cyclist travels at a speed of 12 m/s and covers 360 meters. How long does it take?
What variable are you solving for? What formula would you use?
t
d/t=v
300
A sprinter with a mass of 70 kg is running toward the finish line at a velocity of 8 m/s. What is the sprinter's momentum?
560 kg·m/s.
300
According to the distance/time graph, which object is moving the fastest?
object A
300
You are thrown off the front of a 4 wheeler when it runs into a fence. This is an example of which law of motion?
Newton's First Law.
300
What impulse is exherted if a force of 25N acts on a car for 3.2s.
What is 80 N*s
300
The units of momentum are this
What is kg*m/s
400
A 4 kg bowling ball is rolling down the lane at 1 m/s. It hits an oily patch and speeds up to 3 m/s. How much momentum did the bowling ball gain?
8 kg m/s
400
A bird is flying in a straight line with a velocity of 10m/s. It then accelerates at a rate of 2m/s/s over the next 5m. What is the bird’s final velocity?
11m/s
400
Draw an example of Newton's 2nd Law.
(show dry-erase board)
400
If a force of 10N occurs on a mass of 2kg, what must be the acceleration? (remember to use appropriate units!)
5 m/s 2
400
A car is traveling 15 m/s with an acceleration of 2 m/s2. How fast is it going after 4 seconds?
👉 What variable are you solving for? What formula would you use?
Final Velocity
vf=vi+at
500
A 0.15 kg baseball is thrown toward home plate with a velocity of 40 m/s. It is hit by a bat and flies straight back toward the pitcher with a velocity of 50 m/s. What is the momentum of the baseball when it hits the pitcher?
7.5 kg·m/s.
500
Explain the motion of this object over the time interval of 0-18 seconds.
Object is going at a constant velocity, it stops, then starts moving slowly speeding up and then decelerating.
500
Explain the action and reaction forces acting on a book resting on a table.
action force is the weight of book on table - reaction force is a force equal to the books weight pushing up from the table onto the book.
500
Which object has more momentum? A 50 kg object moving at 10m/s or a 2.5 kg object moving at 200m/s
Their momentum is equal.
500
A tennis player hits a ball. The racket pushes against the ball with a constant force of 50 Newtons for a duration of 0.2 seconds. What is the magnitude of the impulse applied to the ball?
What are you solving for?
What formula would you use?
Impulse
ΔP=Ft