- A type of mechanical energy is...
Your answer:
Sound
Nuclear
Light
Heat
- A type of non-mechanical energy is...
Your answer:
kinetic
none of these answers
gravitational
sound
- Potential energy is the energy an object has because of its....
Your answer:
location
size
temperature
speed
- The amount of potential energy possessed by an elevated object is equal to
Your answer:
the force needed to lift it
the power used to lift it
the work done in lifting it
the distance it is lifted
- The unit of work is the....
Your answer:
joule
newton per meter
newton
watt
- A collision is considered elastic if...
Your answer:
there is no sound generated during the collision
all of these answers are correct
the object's that collide don't get hot
there is no lasting deformation
- A skateboarder can get higher and higher on a half pipe by..
Your answer:
doing work raising their center of mass on the way down and lowering it on the way up
leaning forward on the way down andleaning back on the way up
doing work lowering their center of mass on the way down and raising it on the way up
wearing less baggy clothing
- Assuming the same even braking, a car traveling twice as fast as another and having the same mass will
Your answer:
stop in four times the distance
stop in eight times the distance
stop in the same distance
stop in twice the distance
- A bow string is stretched twice as much. The elastic potential energy stored in the stretched string will be..
Your answer:
four times as much
eight times as much
twice as much
the same
- How much faster would an arrow leave this bow?
Your answer:
eight times as fast
twice as fast
the same speed
four times as fast
- If a certain amount of work is done in half the time the power output of the machine will be...
Your answer:
four times as much
one half as much
twice as much
the same
- If the velocity of a moving object doubles, then what else doubles?
Your answer:
none of these answers are correct
kinetic energy
momentum
acceleration
- An object is dropped from the fourth floor window of a building. Compared to an object dropped from the second floor window it will hit the ground with...
Your answer:
eight times as much speed
none of these answers are correct
twice as much speed
four times as much speed
- The output power of an engine is 150 hp. If the machine is 60% efficient its power rating is....
Your answer:
250 hp
none of these answers is correct
90 hp
150 hp
- The area under a F-d graph represents...
Your answer:
change in momentum
impulse
power
work
- A half pipe and a roller coaster track both...
Your answer:
all of these answers are true
can allow the riders to feel temporary weightless
involve non-conservative forces
act as energy conversion devices
- The 2.0 kg head of an axe is moving at 5.0 m/swhen it strikes a log and penetrates 0.02 m into the log. What is the average force the blade exerts on the log?
Your answer:
500 N
250 N
25 N
1250 N
- A 2000 kg rollercaoster car is winched up a 60 m first hill. The braking distance required to stop the car at the station if a constant braking force of 15000 N is applied is....
Your answer:
800 m
400 m
80 m
40 m
- A small economy car (low mass) and a limousine (high mass) are pushed from rest across a parking lot, equal distances with equal forces. The car that receives more change in kinetic energy is the.....
Your answer:
small economy car
limousine
same for each
no answer
- A planet orbits a star with a circular orbit. The planet's speed is constant because......
Your answer:
no work is done on the planet by gravity
no unbalanced forces act on the planet
all these answers are correct
the planet is not accelerating