Which Law?
Gravity, Working Against Me
Fabulous Forces
Nuggets of Newton
Grab Bag
Final Jeopardy
200
A baseball hit with a bat accelerates more than a bowling ball hit with a bat.
2nd Law
200
This force opposes the force of gravity when objects fall through the air.
Air resistance
200
Do balanced or unbalanced forces result in a change in motion?
Unbalanced forces
200
Newton’s 1st Law is also known as the…
Law of inertia
200
Mass in motion is also known as…
Momentum
200
What is the mass of a car that hits a deer with a force of 3,000 N if it started traveling at a speed of 50 m/s but slowed down to 25 m/s in 5 s before hitting the deer?
600 kg
400
A balloon flies forward when air quickly escapes it.
3rd Law
400
What two factors affect gravitational pull?
Mass and distance between masses
400
Mikaia pushes a box with a force of 10 N to the right and Lisa pushes with a force of 3 N to the left. Find the net force applied to the box.
7 N to the right
400
The more _______ you have, the more inertia you will have.
Mass
400
If the mass of a bulldozer is 1,250 kg and it is moving at a speed of 20 m/s, how much momentum does it have?
25,000 kg*m/s
600
A book left on the table overnight is there when you return in the morning.
1st Law
600
What is the acceleration due to gravity on Earth?
9.8 m/s2
600
What is the unit for weight?
Newtons
600
The law that states that an object accelerates in the same direction as the force applied to it is…
Newton’s 2nd Law
600
What force best explains why a feather and a tennis ball do not both fall with an acceleration of 9.8 m/s2 like they should?
Air resistance
800
You run into a friend while skating and you both fall in opposite directions.
3rd Law
800
Ignoring air resistance and friction, what should be observed about two objects that are dropped at the same time?
Both objects should have the same acceleration
800
Name 3 common forces that can be applied to objects.
Friction
Gravity
Air resistance
800
What would a man weigh if he has a mass of 60 kg?
588 N
800
Rank the following items from most momentum to least momentum.
Fast airplane Slow bicyclist Parked car Fast bicyclist
Fast airplane, fast bicyclist, slow bicyclist, parked car
1000
The bike you are riding hits a hole and stops quickly, but you fly forward.
1st Law
1000
The maximum speed a falling human can reach is 55 m/s (or 118.06 mi/hr.) What is the name for this speed and what two forces become balanced for this to be possible?
Terminal velocity
Gravity and Air Resistance
1000
Find the acceleration on the box below.
0.25 m/s2
1000
The force exerted on a cart is constant. On a frictionless surface, if the cart’s mass is increased, what will happen to its acceleration? Include which law supports your answer.
Decreases, because of Newton’s 2nd Law
1000
A car accelerates from 20 m/s to 60 m/s in 5 s. If the mass of the car is 150 kg, find the force on the car and the final momentum.
F = 1,200 N
pfinal = 9,000 kg*m/s