Places Review and Quiz — Unit test Answers

Which sea creature has the most momentum? [___]

Consider a system to be one train car moving toward another train car at rest. When the train cars collide, the two cars stick together.What is the total momentum of the system after the collision?800 kg • m/s1,600 kg • m/s2,400 kg • m/s4,000 kg • m/s

Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision. How does the final velocity of train cars A and B after the collision compare to the initial velocity of train car B before the collision?The final velocity is double train car B’s initial velocity.The final velocity is the same as train car B’s initial velocity.The final velocity is half of train car B’s initial velocity.The final velocity is zero si

The diagram shows Ned’s movement as he left his house and traveled to different places throughout the day.Which reference point should be used to find out how far Ned traveled when he went from the pet store to the swimming pool?

If the action force is the boy pushing on the ball, what is the reaction force? | Which way will the boy on the skateboard move?

While the change in will remain the same during a collision, the force needed to bring an object to a stop can be if the time of the collision is .

Koto traveled 5,000 meters north from her house with an average velocity of 4.5 m/s.What was the time of her trip? (There are 60 seconds in 1 minute.)

Levi and Clara are trying to move a very heavy box. Levi is pushing the box with a force of 30 N, and Clara is pulling the box with a force of 50 N. The box exerts a frictional force of 65 N.