Questions and Answers 100% pass
A music Console is pushed a distance of 2 m with a force of 20N. The work done on
the console is
1) 2 J
2) 10 J
3) 80 J
4) 20 J
5) 40 J - ✔✔5) 40 J
A 4 kg ball has a momentum of 12kg*m/s. What is the ball's speed?
12 m/s
3 m/s
48 m/s
4 m/s
none of the above - ✔✔3 m/s
Which has greater kinetic energy, Car 1 traveling at 30 km/h or Car 2 of half the
mass traveling at 60 m/h?
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,Car 1
Car 2
Both have the same kinetic energy - ✔✔Car 2
An object with kinetic energy must be
at rest
moving
at an elevated position
falling
none of the above - ✔✔moving
An object lifted 10 m gains a certain amount of potential energy. If it is lifted 20 m, its
gain in potential energy is
four times as much
twice as much
the same
less
more than four times as much - ✔✔twice as much
A freight train rolls along a track with considerable momentum. If it rolls at the same
speed but has twice as much mass, it momentum is
unchanged
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, zero
quadrupled
doubled - ✔✔doubled
When a non-hybrid car brakes to a stop, its kinetic energy transforms into
energy of rest
stopping energy
energy of motion
potential energy
heat - ✔✔heat
A ball is moving at 4 m/s and has a momentum of 48 kg*m/s. What is the ball's
mass?
12 kg
48 kg
192 kg
4 kg
none of the above - ✔✔12 kg
When you push an object a certain distance while applying twice the force, you do
the same amount of work
four times as much work
twice as much work - ✔✔twice as much work
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