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?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Agroup of monkeys is trying to cross the river in a rowboat. the maximum buoyant force on the rowboat is 2,000 n. the weight of the rowboat is 1,000 n. each monkey has a weight of 150 n. how many monkeys can safely cross in the rowboat at one time? explain your reasoning, including any calculations you used to find the answer.

Am i correct on these two physics questions?