Question

A spacecraft's landing is cushioned by air bags. As it lands on Mars, the velocity of downward fall is 20 meters/second. Immediately after impact the velocity is
10 meters/second. If the spacecraft has a mass of 7.1 × 104 kilograms, what is the value of the impulse?

A.
1.2 × 104 kilogram meters/second
B.
2.2 × 105 kilogram meters/second
C.
7.1 × 105 kilogram meters/second
D.
3.6 × 104 kilogram meters/second

Answer 1

What do you think?

Answer 2

Chose between C. 7.1 x 10^5 AND A

Answer 3

impulse is m * (v_final - v)initial)