1) more work is required to increasea cars speed from 10.mph to 30mph, than from
ID: 2211343 • Letter: 1
Question
1) more work is required to increasea cars speed from 10.mph to 30mph, than from 50.mph to 60mph.... 2) A 1.0kw engine compared to a 0.50kw engine can do twice the amount of work in half the time..... 3) When a garbage truck crashes head on into a Volswagon, the Volkswagon experiences a greater impact force..... 4) Two mean, Dwaine and Jesse, push againt a wall with equal force. An exhausted Dwaine stops after 10min while Jesse is able to push for 5 min longer. Therefore jesse does 50% more work than Dwaine..... 5) If the speed of a car is doubled, its kinetic energy is doubled....Explanation / Answer
1) more work is required to increasea cars speed from 10.mph to 30mph, than from 50.mph to 60mph.... TRUE
2) A 1.0kw engine compared to a 0.50kw engine can do twice the amount of work in half the time.....TRUE
3) When a garbage truck crashes head on into a Volswagon, the Volkswagon experiences a greater impact force.....FALSE
4) Two mean, Dwaine and Jesse, push againt a wall with equal force. An exhausted Dwaine stops after 10min while Jesse is able to push for 5 min longer. Therefore jesse does 50% more work than Dwaine.....FALSE
5) If the speed of a car is doubled, its kinetic energy is doubled....FALSE
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