A 120kg lineman moving west at 2 m/s tackles an 80kg fullback moving east at 8 m/s. After the collision, both football players move east at m/s

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

When an object is heated it contracts. a. true b. false

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.