I got -3.6 m/s but I had to do conservation of momentum for this question. Which involves Newtons third law but with simply that law I do not know how to complete this question. If you would like me to post my work I will though! Sorry
We calculate current from the formula: , where q is a electric charge transferred over time t Time should be converted to seconds: 1h 15 min= 75min= 4500s I= Result is in unit-Ampere
I don’t see any answer choice but the best way is asking questions about the natural phenomenon, making hypothesis, and predicting the consequences in the hypothesis.