Show:
Basics
Units
Forces in action
Problem solving
Real-world application
100

What is Newton's second law?

F=ma

100

What does F stand for?

Net Force

100

What is Net Force?

The total of all forces acting on an object is called this

100

A 10 kg bowling ball is pushed with an acceleration of 2 m/s2. What is the net force acting on the ball?

20N

100

It is easier to push this when it's empty but much harder when it's full of groceries?

Shopping cart

200

What is F=ma?

The equation for Newton's Second law

200

What is kg?

Unit For Mass

200

What is zero?

When forces are balanced

200

A 75 kg student standing on a skateboard is pushed by a classmate. If the student and skateboard accelerate at 0.5 m/s2, what is the force of the push?

37.5N

200

When you hit a baseball with a stronger swing, it accelerates more?

a higher bat speed transfers more kinetic energy and momentum to the ball

300

What is the Net force?

The direction of acceleration is always in the same direction as this

300

What does M stand for?

Mass

300

What has the same direction of the net force?

Acceleration

300

The engine of a 1,500 kg car produces a forward force of 750 N. What is the net force on the car, assuming a constant resistance force of 250 N?

500N

300

A soccer ball has a mass of 0.45 kg.A player kicks it with a force 75N.What is the ball's acceleration?

167 m/s2

400

What is staying constant?

If no net force acts onto an object, it has not motion

400

What is m/s2? 



Unit for Acceleration

400

What is it that also doubles?

If you double the force on an object, its acceleration does this (if it stays the same)

400

An 8 kg falling object encounters 4 N of air resistance. What is the net force on the object?

74.4 N

400

if a vacuum has a mass of 20kg. What is the acceleration?

a=f/20

500

What are force, mass, and acceleration?

These are used in Newton's Second Law

500

What is f/a for?

Solving for mass

500

What will have a smaller acceleration?

If you double the object's mass but keep the same force, its acceleration does this

500

A 67.2 kg skydiver opens his parachute and instantly slows down at a rate of 72 m/s2. What is the air resistance force on the sky diver and parachute?

1,029.6 N

500

if the box has a mass of 2.0 kg.What will its acceleration be?

fnet=2.0 m/s2