Newton's Laws
This laws says that the acceleration of an object depends on its mass and the force applied.
Newton's second Law: The law of acceleration
A 5 kg ball is thrown and accelerates at 2 m/s2, what is the force applied to it?
10 N
What is the unit of measurement for force?
Newton (N)
A person is riding a scooter and hits a large rock. Which of Newton's laws explains why the rider flies over the handlebars?
First Law of Inertia
When finding net force, when the forces applied are in opposite directions, do you add, subtract, multiply or divide?
subtract
This law says that an object's motion will not change unless an unbalanced force is applied.
Newton's first law: The law of inertia.
What is the force applied to a 20 kg sled that accelerates at 2 m/s2?
40 N
What do the arrows in a net force diagram tell us about the force?
Magnitude (size) and direction
Which of Newton’s Laws of Motion best explains why you hit the right side of the seat when the roller coaster quickly turns left?
First law
The tendency of an object to resist a change in its motion
inertia
This law says that an object at rest will stay at rest until acted on by an external force.
Newton's 1st law: The law of inertia
A golf ball is hit with a force of 10 N. The ball has a mass of 0.1 kg. What was the acceleration of the ball?
100 m/s2
When finding net force, when the force applied is in the same direction, do you add, subtract, multiply or divide?
Add
The air rushing out of a balloon, causing it to fly across the room.
3rd Law (action/reaction)
The amount of inertia an object has depends on its ______.
mass
This law says that forces act in pairs.
Newton's 3rd Law: The law of action reaction.
A plane takes off down the runway with an acceleration of 5 m/s2, the force applied to the plane is 50000 N. What is the mass of the plane?
10000 kg
Two students play tug of war. Jessie pulls with a force of 20 N, Tammy pulls with a force of 10 N. What is the net force on the box?
10 N towards Jessie
A bowling ball and a basket ball are rolled with the same amount of force, the basketball accelerates faster.
2nd Law
A change in the speed or velocity of an object
acceleration
Every action has an equal and opposite reaction
Newton's 3rd law
A 2 kg box is pushed 2 N to the right by Beth. It is pushed to the right by Mack with a force of 7 N. What is the acceleration of the box?
4.5 m/s2
Two students play tug of war. Hugh pulls with a force of 20 N, Leisa pulls with a force of 50 N. Who wins?
An archer draws back on the string of his bow, when he releases the string his arrow flies forward.
3rd Law
The Lowe’s NASCAR car travels 210m east in 5 seconds. What is the driver’s velocity as it leads the race?
42 m/s