A large crate of mass m is placed on the back of a truck but

Last updated: 5/3/2023

A large crate of mass m is placed on the back of a truck but not tied down As the truck accelerates forward with an acceleration a the crate remains at rest relative to the truck What force causes the crate to accelerate O the normal force O the force of gravity O the force of friction between the crate and the floor of the truck O the ma force O none of these