Un tren se mueve inicialmente con una velocidad de 25 m/s y al cabo de 20 segundos su velocidad final es 85 m/s. Calcular la aceleración de esta partícula

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j

There are weak or strong attractive forces between atoms of liquids with a high viscosity