Help with 5,6,6

Use the diagram below for the next 4 questions. mass of a stationary block of wood = 1.50 kg mass of bullet = 30.0 g vi = 280 m's ve = 190 m/'s 12.0 CM NR 5 What was the change in kinetic energy of the bullet? 6. What became of the bullet's Ex? a) The bullet did work on the wood block b) Ek was conserved c) Ek was elastic potential energy d) Ep turned into Ek NR 6 What was the average force exerted on the block? Your answer needs to be in scientific notation as a.bc x 10 and you record it on Canvas as abcd (do NOT use any decimals). To allow EVERYONE the chance to get this right, you will assume that the change in kinetic energy was 7.00 x 10' J