On the way to work in the morning, a man drives five miles east to a gas station before heading another ten miles north to his office. Assuming he travels directly from work at the end of the day, what is the magnitude of the resultant displacement ‘C’?

Will you chech and finish these for me, because i am stumped with them.

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?

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