A0.40-kg object is traveling to the right (in the positive direction) with a speed of 2.0 m/s. after a 0.20 s collision, the object is traveling to the left at 3.0 m/s. what is the magnitude of the impulse (in n-s) acting on the object? the answer must be positive. (never include units in the answer to a numerical question.)

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.