A crate of fragile dishes is in the back of a pickup truck. The truck accelerates north from a stop sign, and the crate moves without slipping.

Does the friction force on the crate point north or south?

Or is the friction force zero?

Explain in complete sentences.

Answer and Explanation:

As the truck accelerates towards north, the crate in the back of the pickup truck is accelerated towards south without slipping but the friction force between the bottom of the crate and the surface of truck is along the direction of the truck and thus the direction of truck is north so the fiction force also would be along north.

HELP

As the truck accelerates towards north, the crate will experience a force towards south, thus accelerating it (crate) due south. The force of friction between the crate and truck floor will thus act towards north direction to oppose the motion of the crate.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

elctricity and magnet is conversion to it