A Physics 150 2015, Ch x Y At what speed do ax G Physics question | Chx c Dwww.w

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A Physics 150 2015, Ch x Y At what speed do ax G Physics question | Chx c Dwww.webassign.net/web/Student/Assignment-Responses/submit?dep-12634578 Stetan 3. +0/1 points | Previous Answers My Notes Ask Your Teacher In the figure below, what value of Fmax gives an impulse of 7.2 N·s? NOTICE that the time scale on the graph is in units of ms, where 1 ms = 0.001 s Enter a number 0 t (ms) 0 2 4 6 80 Submit AnswerSave Pro 4. -4 points My Notes Ask Your Teacher (a) A 1.6 kg object is moving to the right with a speed of 0.6 m/s when it experiences the force shown in figure (a) below. What are the object's speed and direction after the force ends? m/s | Select (b) Answer this question for the force shown in figure (b) below m/s!--Select F (N) F (N) 0 i (s) 5:16 PM 11/2/2015

Explanation / Answer

A) the impulse will be the area undet the curve,

= area of triangle = 0.5* 8 millisecond * F max

=> 7.2 = 0.5* 8x10-3 secs* F max

=> Fmax = 1800 N

B) a) the force is + 2 N and experienced for a time of 0.5 secs

we know that force = mass * acceleration

so , accceleration will be F/m = +2 /1.6 = 1.25 m/s2

now ,

we know that

final velocity = initial velocity + acceleration* time

= 0.6 m/s + 1.25 m/s2* 0.5 s

= 1.225 m/s

b) a) the force is - 2 N and experienced for a time of 0.5 secs

we know that force = mass * acceleration

so , accceleration will be F/m =-2 /1.6 = -1.25 m/s2

now ,

we know that

final velocity = initial velocity + acceleration* time

= 0.6 m/s + (-1.25 m/s2)* 0.5 s

= -0.025 m/s

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