2. Knight P11.8 A 2.00 kg object is moving to the right with a speed of 1.00 m/s when it encounters the force shown below. (a) What impulse does the force exert? (b) What is the object's speed and direction after the force ends? F. (N) 2 0 -2 1.0 s t(s) Answers to one significant figure. These are given so you

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2. Knight P11.8 A 2.00 kg object is moving to the
right with a speed of 1.00 m/s when it encounters
the force shown below.
(a) What impulse does the force exert?
(b) What is the object's speed and direction after
the force ends?
Fx (N)
2
0
-2
1.0 s
-t (s)
Answers to one significant figure. These are given so you
Transcribed Image Text:2. Knight P11.8 A 2.00 kg object is moving to the right with a speed of 1.00 m/s when it encounters the force shown below. (a) What impulse does the force exert? (b) What is the object's speed and direction after the force ends? Fx (N) 2 0 -2 1.0 s -t (s) Answers to one significant figure. These are given so you
Useful information
gravitational acceleration g = 9.8 m/s²
Gravity
Power
Momentum
Newton's 2nd law
Impulse
ΔΕsys
P =
At
P = F cos 0 Vx
Fg = -mg
Ug = mgy
Ap=
pt f
p = mi
F =
AP
个
desys
dt
18
F
F(t) dt
→ area under the F-t graph
Transcribed Image Text:Useful information gravitational acceleration g = 9.8 m/s² Gravity Power Momentum Newton's 2nd law Impulse ΔΕsys P = At P = F cos 0 Vx Fg = -mg Ug = mgy Ap= pt f p = mi F = AP 个 desys dt 18 F F(t) dt → area under the F-t graph
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