Alobsterman pushes a 91 kg boat that is initially at rest. The net force on the boat varies with time as shown below.

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.