Vocabulary
What is Mass?
The amount of matter that makes up an object
Pushing or pulling an object that is already moving can make the object....
speed up, slow down, stop, or change direction.
If two boys are in a tug of war and they are both pulling the rope with the same amount of force. What will happen?
They will not move at all.
A object with a lot of mass needs less force to be moved
False it needs more force
What 2 things do you need to calculate speed?
Distance and time
A push or a pull that can change the motion of an object is known as the...
Force
The kinetic energy of an object depends on its
Mass and Velocity
What is the Speed?
Distance: 10m
Time: 5s
Speed is 2 m/s
The tendency of an object at rest to stay at rest unless it is acted upon by a force is known as inertia
A hunter shoots a 2 kg arrow accelerating it at 15m/s2. How much force does this require?
30 N
What is Collision?
The moment when two objects hit each other
Even though the force exerted on each object in a collision is the same strength, if the objects have different masses, their changes in velocity will be.....
Different
A train that travels 100 kilometers in 4 hours is traveling at what average speed?
25 km/hr
Mass and weight are the same?
False mass is how much matter is in an object, and weight is the gravitational pull on that object
What is Newton's second law?
Newtons second law of motion states that heavier objects need a larger force to make them move.
A force between an object and the surface it is moving over is known as
Friction
If the same strength force is exerted on two objects but the objects have different masses, the object with less mass will have a ___________ in velocity
Greater Change
A thug pushes some 100 kg punk with 300 N of force. How much is the punk accelerated?
3 m/s2
When two objects collide, a force is exerted on each object. The two forces are exerted in same directions, but they different strength.
False
When two objects collide, a force is exerted on each object. The two forces are exerted in opposite directions, but they are the same strength.
What is Newton`s first law?
Newtons first law of motion states that that an object’s motion won’t change unless acted upon by a force.
a self-contained unit on an aircraft, spacecraft, vehicle, or vessel that can be detached for a particular function is known as
Pod
Wheelchairs built for racing have the lowest possible mass. This way, the wheelchairs can change ______ as much as possible when the rider exerts a force on them.
Velocity
A batter hits a baseball with 500 N and the ball is accelerated at 25 m/s2. What is the mass of the ball?
20 kg
Newton`s third law of motion states that every action there is an opposite and equal reaction.
True
A ball is rolled on four different types of materials. Which material will cause the most amount of friction between it and the ball? Tile, grass, carpet, cement side walk, or sand paper
Sand Paper