5420 R @ Z2HOOxTBc 0L 4P = A (o BT R c] o R Ast Y ] Submit Answer 7. [-/8 Points] DETAILS SERCP11 5.5.P.021. 0/5 Submissions Used MY NOTES | ASK YOUR TEACHER A block of mass 2.00 kg is placed against a horizontal spring of constant k = 755 N/m and pushed so the spring compresses by 0.0600 m. LIRS (a) What is the elastic potential energy of the block-spring system (In J)? J (b} If the block is now released and the surface is frictionless, calculate the block's speed (in m/s) after leaving the spring mi's [BR. &R LS 5:43 O R B - SOOOMMS KGOSILETSA 9 9 NI 5G UC .all 74% Need Help? Read It Watch It Submit Answer 8. [-/8 Points] DETAILS SERCP11 5.6.P.032. 0/5 Submissions Used MY NOTES ASK YOUR TEACHER A 69-kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.2 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar. m Need Help? Read It Submit Answer Home My Assignments + Request Extension