The figure below shows two horizontal forces that act on a car travelling along a strai orce $B$ is caused by air resistance and friction.

a$.$ In the figure above, draw two other forces acting on the car.

b$.$ The forward force A and the backward force B are equal.

Describe the motion of the car.

coustant spied

c$.$ The mass of the car is $800kg.$ Find its weight.

$w=mg,8209\mathrm{.}8=1849$

d$.$ What is the force exerted by the ground on the car?

$F_g=F_w=7,840N$

e$.$ Force A increases to $5000N.$ This causes the car to accelerate initially at $1\mathrm{.}5\frac{m}{?}$ size of force $B.$

$F_{\text{n}\text{e}\text{t}}=F_A-F_B$

$1200=5100=F_8$

$F_B=3800N$

f$.$ Force A remains constant at $5000N.$ Explain why the acceleration decreases as along the level road.

g$.$ The car later reaches a constant speed. If it takes a turn at a circular bend with why is the car still accelerating?

$7.$ Describe the importance of using a seat belt while driving.