A lawn roller is pushed 15 meters by a force of 100 N. If theperson has used 85 W, how long did it take for the person tocomplete the task?O 12.98 s19.55 sO 17.65 sO 10.44 sA 1200-kg boulder sits on a 30 meter hill. Which will causemore damage on the objects at the bottom of the hill,dropping the boulder directly downwards or moving theboulder at 100 kph?Dropping the boulder is more destructive than moving it to 100kph, because the potential energy is greater than kinetic energy.Dropping the boulder is more destructive than moving it to 100kph, because the kinetic energy is greater than the potentialenergy.Moving the boulder to 100 kph is more destructive than droppingthe boulder, because the kinetic energy is greater than thepotential energy.Moving the boulder to 100 kph is more destructive than droppingthe boulder, because the potential energy is greater than kineticenergy.

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Answered: A lawn roller is pushed 15 meters by a…

A lawn roller is pushed 15 meters by a force of 100 N. If the person has used 85 W, how long did it take for the person to complete the task? O 12.98 s O 19.55 s O 17.65 s O 10.44 s

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 16PE: A hydroelectric power facility (see Figure 7.38) converts the gravitational potential energy of...

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Question

A lawn roller is pushed 15 meters by a force of 100 N. If the
person has used 85 W, how long did it take for the person to
complete the task?
O 12.98 s
19.55 s
O 17.65 s
O 10.44 s
A 1200-kg boulder sits on a 30 meter hill. Which will cause
more damage on the objects at the bottom of the hill,
dropping the boulder directly downwards or moving the
boulder at 100 kph?
Dropping the boulder is more destructive than moving it to 100
kph, because the potential energy is greater than kinetic energy.
Dropping the boulder is more destructive than moving it to 100
kph, because the kinetic energy is greater than the potential
energy.
Moving the boulder to 100 kph is more destructive than dropping
the boulder, because the kinetic energy is greater than the
potential energy.
Moving the boulder to 100 kph is more destructive than dropping
the boulder, because the potential energy is greater than kinetic
energy.

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