Q2. A 15-kg crate moves to the right with a velocity of vo m/s when a force, F is applied at time to = 0 s. The force varies as shown in the Figure 2 where t = 2.25 s, tz = 4.5 s, t3 = 6.75 s. The block is moving with an initial velocity, vo = 4.8 m/s, and the force remains constant at -20 N for all times greater than t3. By using principle of linear impulse and momentum, determine time it take to stop the motion of the crate. F (N) 20 10 +(s) 13 12 - 10 -20