contestada

A 44 kg block lies on a horizontal frictionless surface. A horizontal force of 110 N is applied to the block. (a) Determine the acceleration of the block. (b) Calculate the distance the block will travel is the force is applied for 8 s. (c) Calculate the speed of the block after the force has been applied for 8 s.

Respuesta :

elchaupa

Answer:

a.2.5m/s² b.240m c.40m/s

Explanation:

a).mass(m)=44kg

horizontal force(F)=110N

F=ma, therefore a =F/m =110/44

a=2.5m/s²

b).F=mu/t so we find u and put it in the equation s= ut + ½at² to find s, since t=8,a=2.5m/s²

solving....

we get u to be 20m/s

so s=(20•8)+½(2.5)(8)²

s=240m

c). u=20m/s, a=2.5m/s², t=8s

therefore since v =u + at, we are asked to find v

v=20+(2.5•8)

v=40m/s

Otras preguntas