Our family car travels 40 miles in 2 hours. What is our average speed in mph?

A12-kg bag of groceries is tossed onto a table at 4.0 m/s and slides to a stop in 2.2 s . modify the equation fδt=δ (mv) to find the force of friction.

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount