A960 kg car is pulling a 310 kg trailer. together the car and trailer move forward with an acceleration of 2.00 m/s2. ignore any frictional force of air drag on the car and all frictional forces on the trailer.
(a) determine the net force on the car.
magnitude

n
direction

(b) determine the net force on the trailer.
magnitude

n
direction

(c) determine the force exerted by the trailer on the car.
magnitude

n
direction

(d) determine the resultant force exerted by the car on the road. (assume that the forward direction is along the +x-direction.)
magnitude

a)

b)

c)

d)          

    from the horizontal.

Explanation:

Given:

mass of the car,

mass of trailer,  

acceleration of the system,  

(a)

Net force on the car will be in the direction of acceleration given by:

(b)

(c)

Since the car and the trolley are linked together, the link will face a tension force and this will be exerted on the car by the Newton's third law of motion which can be given as:

(d)

Net vertical force acting on the road due to car:

Net vertical force acting on the road:

Now, the net resultant force:

Angle f the force from horizontal:

from the horizontal.

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me