Cards in this guide (22)
A 12.0 rock slides off the edge of a bridge and falls into the water 25.0 meters below what is the kinetic energy as it hits the water
What term describes an educated guess about what the answer to a question might be
What is the mechanical advantage of a simple machine that requires a force of 40 newtons input to lift a 200 newton object
The answer is 5. To find mechanical advantage, divide the force
required by the force given.
200/40 = 5
Four students are moving 80 N boxes from the floor to a shelf 4 meters high Student A moves 8 boxes in 10 minutes Student B moves 6 boxes in 8 minutes Student C moves 4 boxes in 6 minutes and st
The custom of watching fireworks on the Fourth of July would be studied by this social science
A jogger runs at an average speed of 5 ms for 3 minutes then finishes with an average speed of 4 ms for 2 minutes What is his average speed in ms for the run
Which of these rates is slowest 1760 yardsminute 60 mihr or 88 ftsec
When you convert it, you will find out that they're all the
same.
A 14 kg cart is coasting down a street at a steady speed of 7 ms what is the kinetic energy of the cart
Kinetic energy = 1/2 M V2 = 0.5 x 14 x 49 = 343 joules
The tangent of an angle equals the ratio of the
Sine of the angle to its cosine.
A 10 kg rock is pushed off the edge of a bridge 50 meters above the ground What was the kinetic energy of the rock before it began to fall
A 10 kg rock is pushed off the edge of a bridge 50 meters above the ground what was the kinetic energy of the rock at the midway point of its fall
A rock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground What was the potential energy of the rock before it began to fall
Look at the pie graph pictured How many students ate in the cafeteria
A 1600 kg car is traveling at a speed of 12.5 ms what is the kinetic energy of the car
KE = 1/2 M V2
= (1/2) (1,600) (12.5)2
= 125,000 kg-m2/sec2
= 125,000 newton-meters
= 125,000 joules.
This term is the center of interest for an artwork
Focal Point for my A+ buddies ;p
As an object falls towards the ground what happens to the potential energy of the object
As an object falls from a higher level to a lower level, the
gravitational potential
energy that it had at the higher level changes to kinetic
energy.
As more and more potential energy changes to more and more
kinetic energy,
the increase of kinetic energy shows up in the form of greater
speed.
A ramp is 30 meters long and 5 meters high 200 newtons of force must be applied by the mover to push a 1000 newton piano up the ramp What is the amount of work done by the mover
What is the amount of work accomplished by the ramp? - 5000
joules
What is the amount of work done by the mover? - 6000 joules
What is the efficiency of the ramp? - 83%
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. mechanical advantage
What type of measurement is this 12 feet up scalar or vector
A scalar has distance but no direction.
A vector has distance and direction.
"12 feet up" has distance (12 feet) and direction (up), so is a
vector.
What of these is always part of using the scientific method
A question about an observation
A rock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground. What was the kinetic energy of the rock before it began to fall
