Achild generates 42 w of power as she pulls a wagon forward across a flat sidewalk with a force of 70 n. the child pulls with this force for 4.5 minutes. what distance does the wagon move?

110 m

160 m

75 m

210 m

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?