Impulse and Momentum- Practice Problems 1. Two average forces, Fi and F2,produce

Question

Impulse and Momentum- Practice Problems 1. Two average forces, Fi and F2,produce the same change in momentum. F, has a magnitude that is three times as large as that of another average force F2. The average force Fi acts for a time interval of 3.40 ms. For what time interval does F2 act? (102 ms) 2. A flying saucer is moving in deep outer space with a momentum of magnitude of 5.78 x 10' kg·m/s. A retrorocket is fired to slow it down. The rocket applies a force of a magnitude of 1.34 x 10° N to the flying saucer for a period of 10.5 s. The force is directed opposite to the saucer's motion. Determine the momentum of the saucer after the retrorocket ceases to fire. (4.37E+7 kg m/s) 3. Figure shows an approximate plot of force F versus time t during the collision of a 58-g ball with a wall. The initial elocity of the ball is perpendicular to the wall; the ball bounds directly back with approximately the same speed, 2 ndicular to the wall If the maximum magnitude of

Explanation / Answer

1] Change in momentum = impulse = Force*time

momentum change by F1 = F1*t1 = 3F2* 3.4

Momentum change by F2 = F2*t2

since momentumm change by both are equal, F2*t2 = 3*F2 *3.4

t2 = 10.2 s answer

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---