Question

Two boat, meet on . lake. Penn-l pushes on b at#2withahrinr tal free of 38 ON..rokin us) a total weight of 105 N and ban has total weight of 175% then what is the distance of separ boats after son # 1 has been pushing for 0.500 s? Assume that the water exerts no friction. of the two #2 38.0 N 105N 175N Answers are in meters. (a) 0.49 (b)0.55 ()0.71 () 0.82 (e) 0.87 (16) A box starts off at rest and slides down a frictionless ramp, and the loop has radius 2.7m. What height H should you let go of the box so that box just starts to lose contact with the looped track at the very top of the HINT: "To lose contact" means the normal force on the box due to the track becomes (e) 72 (d) 6.7 (e) 6.3 (b) 6.0 (a) 5.8 Answers are in meters

Answer 1

here,

15)

the force applied , F = 38 N

the total weight of boat one , W1 = 105 N

mass of boat 1 , m1 = W1 /g = 10.7 kg

the total weight of boat second , W2 = 175 N

mass of boat 2 , m2 = W2 /g = 17.84 kg

the acceleration of 1 , a1 = - F /m1

a1 = - 38 / 10.7 m/s^2 = - 3.55 m/s^2

the acceleration of 2 , a2 = F /m2

a2 = 38 / 17.84 m/s^2 = 2.13 m/s^2

time interval , t = 0.5 s

the separation , s = 0 + 0.5 * ( a2 - a1) * t^2

s = 0 + 0.5 * (2.13 - (-3.55)) * 0.5^2

s = 0.71 m

the seperation between the two boats is c) 0.71 m

Answer 2

9 -8 1-8 a 38 J 8 -t 10.71 , 17-86 ς.68 mlj.