When you're involved in a head-on collision with another car, the force of impact will involve: a. only the kinetic energy of the heavier car b. only the kinetic energy of the lighter car c. the combined kinetic energy of both cars

Hey there,

C, The combined Kinetic Energy of both cars

Hope this helps :D

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Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.

The best description is: . nobody has any idea what q is.