PHYS 1010Q Lecture Notes - Lecture 4: Times Square Ball

• School: UConn
• Department: Physics
• Course: PHYS 1010Q
• Professor: Barrett Wells

Document Summary

Phys-1010q - lecture 4 - forces & acceleration (ch. Lowest two quiz grades will be dropped. Ca office hours on wednesday and thursday at 4:00pm. This week i(cid:374) physi(cid:272)s readi(cid:374)g roo(cid:373) (cid:894)first floor of physi(cid:272)s buildi(cid:374)g(cid:895) I ra(cid:374) (cid:1005)(cid:1004) kilo(cid:373)eters to (cid:373)y frie(cid:374)d"s hours at (cid:1005)(cid:1004) k(cid:373) per hour. But the(cid:374) i was tired, so i walked back at only 5 km/hr. For the whole trip, what was my average speed: 15 km/hr, 7. 5 km/hr (15/2, 6. 66 km/hr (20/3) , 5 km/hr. Trip to frie(cid:374)d"s house = (cid:1005) hour, retur(cid:374) trip = (cid:1006) hours. Average speed (cid:1005)(cid:1004) + (cid:1005)(cid:1004) (cid:1005) + (cid:1006) (cid:1006)(cid:1004) (cid:1007) s = Velo(cid:272)ity = (cid:1004) (cid:894)velo(cid:272)ity depe(cid:374)ds o(cid:374) whi(cid:272)h dire(cid:272)tio(cid:374) you"re goi(cid:374)g(cid:895) Ex; dropping a rock a (gravity) = g = 10 m / (cid:1006) g = . While falling, starting at v=0, (cid:1005) d= (cid:1006) g (cid:1006) or t = (cid:1006) .