A1400 kg car moving at 6.6 m/s is initially traveling north in the positive y direction.
after completing a 90° right-hand turn to the positive x direction in 4.9 s, the inattentive operator drives into a tree, which stops the car in 430 ms.
what is the magnitude of the impulse on the car :
(a) due to the turn and (b) due to the collision?
what is the magnitude of the average force that acts on the car (c) during the turn and (d) during the collision?
(e) what is the angle between the average force in (c) and the positive x direction?
a hypothesis is an educated guess that has yet to be investigated, tested, and examined by experiment.
the resistance that one surface or object encounters when moving over another.
"a lubrication system that reduces friction"
synonyms: abrasion, abrading, rubbing, chafing, grating, rasping, scraping, excoriation, grinding, gnawing, eating away, wearing away/down; more
the action of one surface or object rubbing against another.
"the friction of braking"
friction is an important force because it is a force that affects motion. this force exerted by the surface of an object when another object moves against it is the result of molecular attractions between the objects' surfaces, and works in the direction opposite to the direction of the motion.
it's d) they study different areas of science and have different scientific focuses.