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WorksheetsNovember Physics Extra Credits
Total questions: 20
Worksheet time: 11mins
Which unit you use to measure enrgy?
Joules
Watts
Newtons
Meters/Seconds
The potential energy is energy due to _____.
movement
energy
position
velocity
Kinetic energy is the energy of _____.
placement
motion
velocity
position
Select the 2 types of collision.
inelastic collisions
bounce collisions
velocity collisions
elastic collisions
In the _____, objects change shape or stick together.
inelastic collision
elastic collision
bounce collision
velocity collision
Perfectly elastic collisions do occur but on atomic scale.
True
False
A _____ is a push or pull upon an object.
power
work
force
distance
Force*distance is the formula for _____.
power
work
efficiency
torque
Work/time is the formula for_____.
power
work
efficiency
torque
The fulcrum is always at one end of the lever and is where you apply force to cause movement
True
False
The units for mechanical advantage are _____.
Newtons
m/s²
Joules
None
Select all the simple machines.
levers
ramp
bycicle
rope and pulley
_____ is a measure of how good a machine is in doing a work.
Power
Efficiency
Work
Mechanical advantage
Efficiency is measured in percents.
True
False
A scalar quantity has magnitude and direction.
True
False
Friction acts on the _____ direction of the object.
opposite
same
equal
similar
Static friction exists when forces act to move an object but it resists to move.
True
False
_____ balance the force of weight.
Perpendicular force
Equilibrium force
Normal force
Static force
Torque formula is:
F(force) * r(lever arm)
F(force) * t(time)
F(force) * d(distance)
F(force) * V(velocity)
Torque causes objects to _____.
accelerate
spin
rotate
stop
