How to find vertical component of acceleration.

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?

Elements that have one valence electron and are very reactive are called

Suppose that a block is pulled 16 meters across a floor. what amount of work is done if the force used to drag the block is 22 n? a. 352 j b. 200 j c. 220 j d. 330 j