An arrow thrown with a 45° reaches a maximum height of 12 m. Find its initial velocity. 235m/s

15.3m/s

22m/s

17m/s

Answer and I will give you brainiliest

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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?