Intro to physics
A condition that exist when the sum of all forces acting on an object are zero
What is Equilibrium
When there is no net force acting on an object the object will remain at rest or move with constant velocity in a straight line
What is Newtons first law
The product of an objects mass and velocity
What is momentum
Joules
What is units for work
The continuous flow of charges (electrons)
What is current electricity
What is the symbol for Giga
What is G
Center seeking,acting toward center
What is centripetal
Since momentum depends upon velocity it is...
What is vector quantity
Forces objects exert on each other due to their charge
What is static electricity
If several resistors are connected in series in an electric circuit, the potential difference across each resistor
What is varies directly with its resistance
straight up and down and side to side.
What is 2-Dimensional Motion
A 15-kilogram cart is at rest on a horizontal surface. A 5-kilogram box is placed in the cart. Compared to the mass and inertia of the cart, the cart-box system has
What is more mass, more inertia
The total momentum of a system that consists of a moving rocket and exhaust gases will...
What is remains the same
Sliding down a slide is an example of
What is kinetic energy increasing while potential energy decreases
What is the current in a 100 ohm resistor connected to a 0.40 volt source of potential difference
What is 4.0 mA
What number is written as 6.0 × 106 in scientific notation?
what is 6000000
Earth’s mass is approximately 81 times the mass of the Moon. If Earth exerts a gravitational force of magnitude F on the Moon, the magnitude of the gravitational force of the Moon on Earth is
What is F
A 60-kilogram student jumps down from a laboratory counter. At the instant he lands on the floor his speed is 3 meters per second. If the student stops in 0.2 second, what is the average force of the floor on the student?
9 × 102 N
A 100 N force is applied at an angle of 30o to the horizontal to move a 15 kg object at a constant speed for a horizontal distance of 5 m. How much work is done?
What is W=433 J
What is the magnitude for nano
What is 10-9
A 1200-kilogram space vehicle travels at 4.8 meters per second along the level surface of Mars. If the magnitude of the gravitational field strength on the surface of Mars is 3.7 newtons per kilogram, the magnitude of the normal force acting on the vehicle is
What is 4440 N
Ball A of mass 5.0 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction. After the collision, ball A moves at 10 meters per second and ball B at 15 meters per second, both still in the same direction. What is the mass of ball B?
What is 10 kg
Bart runs up a 2.91-meter high flight of stairs at a constant speed in 2.15 seconds. If Bart's mass is 65.9 kg, determine the work which he did and his power rating.
What is W=1879.3
Power = 874 W