Amy leaves her home at 9: 00 am and travels east to sandra’s house, 1,080 m away, and arrives at 9: 09. she waits at sandra’s house for 6 min and then heads further east to jackie’s house 945 m away from sandra’s house. she arrives at jackie’s house at 9: 24. she immediately heads back home after she arrives at jackie’s (jackie wasn’t home). she arrives back at home in 11 min and 15s.

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?