Gravity and Motion
The force that opposes the motion of objects through air.
What is air resistance?
Newton's First Law of Motion.
What is: An object in motion will stay in motion in the same direction and speed and an object at rest will stay at rest until an unbalanced force acts on it?
A book weighs 6.0N. If the acceleration of gravity is 9.8 m/s2, what is the mass of the book in kilograms.
What is 0.61kg?
Newton's Third Law of Motion.
Every action has an equal and opposite reaction.
An astronaut uses a jet of nitrogen to maneuver in space. This can be done because of
What is momentum conservation?
The curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth.
What is projectile motion?
The unbalanced force that acts to stop a desk that is sliding across a floor.
What is friction?
The acceleration of an object depends on the mass of the object and the amount of force applied.
What is Newton's Second Law of Motion.
All forces act in pairs.
What is Newton's Third Law?
The equation for momentum.
What is p=m x v?
The two independent components of projectile motion that combine to form a curved path.
What are horizontal motion and vertical motion?
All objects tend to resist any change in motion.
What is inertia?
The equation that shows Newton's Second Law
What is F=ma?
True or False: It is always easy to see the effect of a reaction force.
False
The Law of Conservation of Momentum.
What is any time an object collides, the momentum stays the same?
A spacecraft orbiting Earth is both moving forward and
What is free fall?
Assuming 1kg=1000g, a 5kg object has less inertia than an object with the mass of
What is ANYTHING with a mass greater than 5kg?
What is the acceleration of a 3 kg mass if a force of 14.4 N is used to move the mass?
What is 4.8 m/s2?
(Action) A rabbit's legs exert a force on Earth. What is the reaction force?
What is the Earth exerts an equal force on the rabbit's legs and causes the rabbit to accelerate upward?
When a moving bumper car collides with a bumper car at rest, what happens after the collision?
What is the momentum is transferred to the car at rest?
Compared to a falling object, the downward acceleration of a thrown object is...
What is the same?
Why does your body continue to go forward when your mom slams on the brakes of your car? (one word)
What is inertia?
Calculate the gravitational force acting on your 6 kg backpack.
What is 58.8 N?
Zookeepers carry a stretcher that holds a sleeping lion. The total mass of the lion and the stretcher is 175 kg. The lion's forward acceleration is 2 m/s2. What is the force necessary to produce this acceleration?
What is F = m x a = 175 x 2 m/s2 = 350 N?
An ice skater with a mass of 65 kg moves along the ice with a constant velocity of 2.0 m/s. What is the skater's momentum?
What is 130 kg x m/s?