Astudent solving a physics problem for the velocity of an object has applied appropriate physics principles and obtained the expression v=dt−v0, where d=35.0meter, t=9.00second, and v0=3.00meter/second. what is the velocity v?

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?