Awatertight car is submerged under water. what force is required to open a door of area 1.13 m2 if the average depth of water at the door is 1.62 m?

17939.88 N

Explanation:

                       ⇒            ........(1)

Also, the pressure of a fluid is given as;

                          P = ρgh                                      .......(2)

Where  P is the pressure of the fluid

ρ is the density of the fluid ( in this question the fluid is water)

h is the height(depth) of the fluid

Equating equation (1) and (2)

                                    = ρgh

                                    Force,   F = ρghA

Given:

Area of the door A = 1.13m²

Depth of the water h = 1.62m

Density of water ρ = 1000kg/m³

Acceleration due to gravity g = 9.8m/s²

                            F = 1000 × 9.8 × 1.62 × 1.13

                            F = 17939.88 N

The force require to open the door is 17939.88 N  

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.