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Identifying motion

Enunciado: Answer if the following statements are true or false: a) If motion has normal acceleration, the motion is rectilinear. b) If motion has tangential acceleration, the motion is curvilinear. c) Normal and tangential acceleration are called intrin ...

Conversion of vectors to scalars in rectilinear motion

Enunciado: Assuming that the following vector magnitudes refer to rectilinear motion, give their corresponding scalar representation: r → = 3 · i → m ∆ r → =- 3 · j → m v → = 4 · (- j →) m / s v → = 3 · t · i → m / s Español Idioma Inglés Sol ...

u.r.m. in collision marbles

Enunciado: Two marble players face each other with their marbles in hand. The game consists of throwing the marbles at the same time in a straight line so they hit each other. The players are located 36 meters from each other and player A launches its ma ...

Time at which two bodies with u.r.m. will meet

Enunciado: Two bodies depart from the same point in the same direction, with uniform rectilinear motion. Knowing that they depart 15 seconds apart, that the first one does it at a speed of 20 m/s and the second one at a speed of 24 m/s, determine at whic ...

u.r.m. velocity in the collision of two bodies

Enunciado: Two bodies depart with 15 s of difference from the same point in the same direction. Knowing that the speed of the first one is 72 km/h, what should be the speed of the second to reach it in 90 s? Note: You can assume that both bodies move wit ...

Analysis of uniform rectilinear motion graphs

Enunciado: The following graph of position-time (x-t) corresponds to a body moving in a straight trajectory. Determine the equation of motion for each segment and its velocity-time graph. From the expression for each segment, search for a general express ...

Draw graphs from u.r.m. equations

Enunciado: Determine the graphs of the following uniform rectilinear motions: x = 3 + 4· t x = 3- 4· t x =-3 + 4· t x =-3- 4· t 3·x = 9 + 12· t Where x is measured in meters and t in seconds. Español Idioma Inglés Solución: Preliminary considerati ...

x-t graph of a person walking

Enunciado: A person walks in a straight line at a velocity of 5 km per hour for 15 minutes. Could you determine its graph of position with respect to time? Español Idioma Inglés Solución: Data v = 5 km / h = 5000 m / 60 min / h = 83.33 m / min-- Velocit ...

A bicycle with constant acceleration

Enunciado: A cyclist starts his morning ride and after 10 seconds his velocity is 7.2 km/h. At that moment, he sees a dog approaching and slows down for 6 seconds until the bicycle stops. Calculate: a) The acceleration until he begins to slow down. b) Th ...

Free fall in a well

Enunciado: Determine the depth of a well in which a stone is dropped, and where you can hear the impact on the water after 1.5 s, considering that the velocity of sound is 340 m/s. Español Idioma Inglés Solución: Data t = 1.5 s v sound = 340 m/s g = 9.8 ...