Which is an appropriate way to avoid heat-related illness when exercising? (5 points) Group of answer choices Exercise in the middle of the day Continue to "play through" cramps Exercise at a high intensity Stay hydrated with cool fluids

Un jugador de beisbol batea un foul recto en el aire.la pelota deja el bate con una rapidez de 120 km/h. en ausencia de resistencia del aire. ? cual sera la rapidez de la pelota cuando la atrape el catcher

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass