a 75,600 n spacecraft comes in for a vertical landing. from an initial speed of 1 km/s, it comes to rest in 2 minutes with uniform acceleration.
ignoring the air resistance, what braking force must its rockets provide?
1.4 x 103n
1.4 x 10°n
1.4 x 102n
1.4 x 105n

Aparticle initially located at the origin has an acceleration of = 2.00ĵ m/s2 and an initial velocity of i = 8.00î m/s. find (a) the vector position of the particle at any time t (where t is measured in seconds), (b) the velocity of the particle at any time t, (c) the position of the particle at t = 7.00 s, and (d) the speed of the particle at t = 7.00