An automobile jack exerts a force of 4,500 newtons to raise a car 0.25 meters. The amount of work done by the jack is joules. Please help, I'm not very smort ;-;'

What are chlorofluorocarbons and what impact do they have on the atmosphere?

What do you think car designers do if the damage caused by a crash test is too severe?

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers