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What's in Motion?
Newton was a Kool Kid
Somethings Rolling
You Got Potential Kid
Bonus? :D
100
A ball is thrown straight up. At the top of its path its acceleration is
What is 9.8m/s/s or 10m/s/s
100
The force required to maintain an object at a constant speed in free space is equal to
What is 0
100
A 2-kg ball is thrown at 3 m/s. What is the ball's momentum?
What is 6kg*m/s
100
How much work is done on a 60-N box of books that you carry horizontally across a 6-m room?
What is 0
100
About how efficient is a typical gasoline-burning car engine?
What is about 30%
200
A stone is dropped from a cliff. After it has fallen 10 m, what is the stone's velocity.
What is 14m/s
200
Excluding the force due to air pressure, there is only one force acting on a book lying at rest on a tabletop. True or False?
False
200
Recoil is noticeable if you throw a heavy ball while standing on roller skates. If instead you go through the motions of throwing the ball but hold onto it, your net recoil velocity will be
What is 0
200
While using a simple 2-piston hydraulic system, you apply a force of 10 N on the first piston to push it down 1 meter. You watch the second piston move a 100 N crate up a distance of 5 centimeters. What is the efficiency of the hydraulic system?
What is 50% or .5
200
When a worker shovels coal into the furnace of a train engine, energy is released from the coal as heat. The heat is used to make steam, which is then used to turn the wheels of the engine. Living cells can also be thought of as machines. What biological process uses combustion to release energy from molecules so that cells can do work?
What is Metabolism
300
A snowball rolls off the edge of a horizontal roof at a velocity of 3.0 m/s. What is the velocity of the snowball 1 second later
What is 10.4m/s
300
You and a friend are jumping on a trampoline. Why does Earth, which is rapidly orbiting around the sun, not move under your feet when you jump?
What is Newton’s first law holds that your body moves along with Earth because it is not compelled to change its motion by an unbalanced force.
300
Superman is at rest in space when he throws an asteroid that has more mass than he does. Which moves faster, Superman or the asteroid?
What is Superman
300
Potential energy is the energy an object has because of its
What is location
300
What is the hang time of a person who can jump a vertical distance of 0.6 m
What is 0.7 seconds
400
A movie stunt driver on a motorcycle speeds horizontally off a 50.0m high cliff. How fast must the motorcycle leave the cliff top to land on the level ground below, 90.0m from the base of the cliff where the cameras are? Ignore air resistance.
What is 28.2m/s
400
A girl pulls on a 10-kg wagon with a constant force of 20 N. What is the wagon's acceleration?
What is 2 m/s/s
400
A bullet with a mass of .001kg is fired at 300m/s at a block of wood that is still with a mass of 10kg. Determine the velocity of the system if the bullet sticks.
What is 0.03m/s
400
How high will a 1.85kg rock go if thrown straight up by someone who does 80.0J of work on it? Neglect air resistance.
What is 4.4m
400
The unit of pressure is
What is newtons per square meter (or pascals).
500
A stone is thrown vertically upward with a velocity of 12.0m/s from the edge of a cliff 70.0m high. How much later does it reach the bottom of the cliff?
What is 5.20s
500
A 10.0kg box is placed on top of the 20.0kg. Determine the normal force that the table exerts on the 20.0kg box and the normal force that the 20.0kg box exerts on the 10.0kg box.
What is 294N, 98.0N
500
Calculate the recoil velocity of a 5.0kg rifle that shoots a 0.020kg bullet at a speed of 620m/s
What is -2.5m/s
500
A 7.0kg monkey swings from one branch to another 1.2m higher. What is the change in potential energy?
What is 82J
500
A popular toy consists of an aligned row of identical elastic balls suspended by strings so they touch each other. When two balls on one end are elevated and released, they slam into the array of balls and two balls pop out the other side. If instead, one ball popped out with twice the speed, this would be a violation of the conservation of....
What is Energy