A car travels from Rome to Bologna (395 km) in 4 hours. consider that the car was stopped at the motorway restaurant for 30 minutes. calculate its speed
If she had traveled at an average speed of 110 km / h but without breaks, would she have arrived sooner or later?

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Why does lightning travel from clouds to the ground?