A 1,200 kg car traveling at 20.0 m/s to the East collides with a 6000 kg truck that is initially at rest at a stoplight. The car and the truck stick together and move together after the collision. What is the final velocity of the two vehicle mass?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Which feature indicates that mars resides in the inner region of the solar system

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n