Bill forgets to put his car in park and it starts rolling west. when it is moving at a speed of 3.5 m/s, it collides with tanya's car, which is moving at a speed of 2m/s east. bill's car bounces backward (to the east) at a speed of 2 m/s. bill's car has a mass of 900 kg, and tanya's car has a mass of 1100 kg.

a. what is the total momentum of the system before collision?

b. what is the total momentum of the system after the collision?

c, what is the velocity of tanya's car after the collision?

•• 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?

Blank liquids and gases exert a buoyant force on objects placed in them

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt