Please help (especially the very last part (e))

Question 1 Read each question carefully. Show all your work for each pan of the question. The pans within the question may not have equal weight. Force ('N) Time (s) D 2.0 4.0 5.0 8.0 10.0 12.0 Students are running an experiment to determine the mass of a block without using a scale. The students set up a block on a horizontal surface of negligible friction. They then attach a force sensor to the block that is at rest, The sensor is then used to exert a force on the block, moving it along a straight line. The force exerted as a function of time is shown in the graph above. At time t : 12s, the block is moving at 1.5m/s. (a) i. Explain how the students could use the graph to estimate the impulse exerted on the block. ii. Calculate the estimated impulse exerted on the block for the time interval 0 to 12 seconds. B JU X X2 3 CQ BE 09 0 / 10000 Word Limit (b) Calculate the mass of the block. BIU XXZO CQ BEO 0 / 10000 Word LimitWhen t = 12s, the force sensor loses contact with the block, which continues to move along the horizontal surface. When t = 20s, the block encounters a rough area and comes to rest in 25 cm. (c) On the graph below, sketch a graph of the speed of the block as a function of time. Speed - Time 12 s 20 s BIU XXSCREW 0 / 10000 Word Limit (d) Calculate the coefficient kinetic of friction between the block and the rough surface.(e) The students repeat the experiment with a block that has twice the mass of the original block. The students exert the same average force to the block. The students again get the block to move with a speed of 1.5 m/s. BIU XXZO CQ BE09 0 / 10000 Word Limit i. Which of the following gives the best estimate for the time range when the new block reaches a speed of 1.5m/s? 0 20 s Justify your