Un coche de 1000 kg que se mueve a 30 m/s frena y se detiene en 6s. Calcular la fuerza total que tiene q hacer sus ruedas sobre el suelo para detenerce.

An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2