Phyces 231-0s Spring 2018 3) Four students run output? up the stairs in the time

Question

Phyces 231-0s Spring 2018 3) Four students run output? up the stairs in the time hn Whie udest hes the lergest power 20 m 80 kg 10 80kg tsig A1-25 s 2.0ms f the spring is replaced A spring-loaded gun shoots with a a plastc ell with s lauch speed new spring having half the soring consran (tllcmpressed the same distance), the baill's launch speed will be A 1.80 m/s 8. 241m/s. C. 2.20m/s D. 141m/s. E 420m/s 5) A partidle moves along the s adis with the potential energy shown. At x3 m, the x component of the force on the particle i UO) e 2N D. 5N E 3N Spring 2018 Exam 3-Dymamics

Explanation / Answer

Problem 3)

Power,P = work/ change in time

P_A = 80 x g x 10/10 = 80 g

P_B = 80 x g x 10/8 = 100 g

P_C = 64 x g x 10/8 = 80 g

P_D = 80 x g x 20/25 = 64 g

so, person B has max power

According to chegg guidelines I can answer one question at a time, sso please post other questions seperately.

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