Jack and Jill went down the hill; Jack hit a stone every foot and rolled 13ft before he stopped. Jill hit a stone every 1.5 ft and rolled 18 feet. How many stones did each hit on their way down the hill?

jack hit 13 stones. Jill hit 12 stones.

Step-by-step explanation:

jack hit 13 stones. Jill hit 12 stones.

Step-by-step explanation:

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

answer: c i think

step-by-step explanation: