Multiple Choice
An object experiences a force given by the graph below. What value of Fmax would give an impulse of 6 N⋅s?
11. Momentum & Impulse
Impulse with Variable Forces
Back11. Momentum & Impulse
Impulse with Variable Forces
- Multiple ChoiceA2.0 kgtoaster is subjected to one force only. The force is in the positive x-direction, and it varies in time such that before . ; between and . ; and after. again. If the toaster started from rest, how fast will it be moving at?
- Open Question
(II) The force on a bullet along the barrel of a firearm is given by the formula F = [740 ― (2.3 x 10⁵ s⁻¹ ) t] N over the time interval t = 0 to t = 3.0 x 10⁻³ s .
(c) Determine the impulse by integration.
- Open QuestionA force in the +x-direction increases linearly from 0 N to 9000 N in 5.0 s, then suddenly ends. (b) What impulse does this force provide?
- Open QuestionA 30 g dart traveling horizontally hits and sticks in the back of a 500 g toy car, causing the car to roll forward at 1.4 m/s. What was the speed of the dart?
- Open QuestionFar in space, where gravity is negligible, a 425 kg rocket traveling at 75 m/s in the +x-direction fires its engines. FIGURE EX11.10 shows the thrust force as a function of time. The mass lost by the rocket during these 30 s is negligible. (b) At what time does the rocket reach its maximum speed? What is the maximum speed?
- Open QuestionA 2.0 kg object is moving to the right with a speed of when it experiences the force shown in FIGURE EX11.9. What are the object's speed and direction after the force ends?
- Open QuestionIn FIGURE EX11.5, what value of Fmax gives an impulse of 6.0 N s?
- Open QuestionWhat is the impulse on a 3.0 kg particle that experiences the force shown in FIGURE EX11.4?
- Open QuestionWhat impulse does the force shown in FIGURE EX11.3 exert on a 250 g particle?
- Open QuestionA 2.0 kg object is moving to the right with a speed of 1.0 m/s when it experiences the force shown in FIGURE EX11.8. What are the object's speed and direction after the force ends?
- Open Question
(II) The force on a bullet along the barrel of a firearm is given by the formula F = [740 ― (2.3 x 10⁵ s⁻¹ ) t] N over the time interval t = 0 to t = 3.0 x 10⁻³ s .
(a) Plot a graph of F versus t for t = 0 to t = 3.0 ms .
- Open Question
(II) The force on a bullet along the barrel of a firearm is given by the formula F = [740 ― (2.3 x 10⁵ s⁻¹ ) t] N over the time interval t = 0 to t = 3.0 x 10⁻³ s . Plot a graph of F versus t for t = 0 to t = 3.0 ms .
(b) Use the graph to estimate the impulse given the bullet.