Forces
A push or a pull is an example of,...
What is a force?
The tendency of an object to resist a change in its motion is called,.....
What is inertia?
If a ping-pong ball and a soccer ball are rolling at the same speed, the ________________ has greater momentum.
What is soccer ball?
What force is responsible for the repulsion between two positively charged particles?
What is the electric force?
The sum of all the forces acting on an object is called the,...
What is net force?
The force of gravity acting on an object (and its mass) give the object its______________.
What is weight?
In a closed system, the loss of momentum of one object_________________ the gain in momentum of another object.
What is equals?
If an astronaut walks on the moon, this is how her moon weight would compare with her Earth weight
What is it would be less on the moon?
The force that opposes the motion of touching objects as they slide past each other is called,....
Who is friction?
The SI unit for force is,.....
What is Newtons (N)?
How can you double the momentum of an object if you cannot increase its mass?
What is double the velocity?
This is why your weight on the moon would be _______ than your weight on Earth, and this is why____________.
What is less because the moon has weaker gravity?
The two forces acting on a falling object are,....
What are gravity and air resistance?
The acceleration of an object is the net_________ acting on the object divided by the object's ________________.
What force and mass?
If the mass of a moving train in 100,000 kg and the velocity is 10 meters per second, what is the train's momentum?
What is 1,000,000 kg. m/s?
What universal force is the most effective over long distances?
What is gravity?
The path of motion of a thrown baseball is an example of _________ motion.
What is projectile motion?
You know that a falling object has reached __________when the force of gravity equals the force of_________________.
What are terminal velocity and air-resistance?
If the momentum of a moving train is 2,000,000 kg.m/s and the mass is 200,000 kg, what is the train's velocity?
What is velocity equals momentum/mass so the velocity would be 10 m/s?
The moon is responsible for this effect on Earth's oceans, and this is why.
What are the rising and falling of the tides because the moon's gravity pulls on the oceans?