Forces at Work
What is a force?
What is a push or a pull
What is the formula for speed?
What is Speed = Distance ÷ Time
Which surface has the least friction? A frozen pond, carpet, grass, or beach?
What is a frozen pond
Which shopping cart is harder to push: empty or full?
What is The full cart, because it has more mass
Why is it harder to stop a truck than a small car?
The truck has more mass
Which team will win in tug-of-war?
The team with the greater force pulling in their direction
Two cars race 100 meters. Car A finishes in 20 seconds, Car B in 18. Which wins?
What is Car B, because it has the fastest speed.
What is Gravity
If the same force is applied to two boxes of different weights, which moves further?
What is The lighter box
What force makes a ball stop rolling on grass?
What is Friction
What force slows things down when surfaces rub together?
What is Friction?
A car travels 360 miles in 6 hours, but due to construction, its speed decreases by 15 mph for the last two hours of the trip. If the car maintained a constant speed for the first four hours, what was its original speed?
What is The car's original speed for the first four hours was 65 mph.
Which will gravity have a greater effect on? A 5lb, 10lb, 15lb, or 20lb dumbbell?
What is The 20lb dumbbell
A student runs a simulation with 3 boxes of different weights. If force is applied equally, which moves the least?
What is The heaviest box
What happens if the force you apply to an object is balanced by another force?
The object stays at the same speed or doesn’t move.
Which two factors have the biggest effect on the speed of an object in motion?
What is Force applied and the object's mass
A student analyzes dots showing a toy car’s motion. The dots get closer together. What does this mean?
What is The car is slowing down
Students slide objects across an icy table with no friction. What two factors affect speed the most?
What is Force applied and object mass/weight
What happens to motion when mass increases but force stays the same?
What is The object moves slower
How does mass affect acceleration if the same force is used?
Heavier objects accelerate slower
In a simulation, a light, medium, and heavy box are pushed with the same force. Which one moves the most?
What is The lightest box moves the most.
A bowling ball and a golf ball are rolling at the same speed. Which takes more force to stop?
What is The bowling ball, because it has more mass
Why do astronauts float in space?
What is There is very little gravity
You push two scooters with the same force. One has a big kid, and one has a small kid. Which scooter moves faster?
What is The one with the small kid, because they weigh less and need less force to move! 🚀
What force keeps a satellite in orbit around Earth?
What is Gravity