Civil Discourse — Unit test Answers

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 .

What is the momentum of a 3 kg bowling ball moving at 3 m/s?1 kg • m/s3 kg • m/s6 kg • m/s9 kg • m/s

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

If a motorcycle, a car, and a big rig are all moving with a velocity of 100 km/h, which vehicle has the greatest momentum?

Two balls, each with a mass of 0.5 kg, collide on a pool table. Is the law of conservation of momentum satisfied in this collision? Explain why or why not.

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 two balls before they collide.

Read the scenario.Four students are working on a group project on the issue of police brutality. They discuss how to present the findings from their research. Three of the students want to make a documentary that includes interviews and video clips. The fourth wants to make a slideshow with quotes and graphs showing statistics. The three students decide to include the statistics in the documentary. The fourth student feels satisfied and agrees to the plan.

The law of conservation of momentum states that, if left alone, what happens to the total momentum of two interacting objects that make up a system?

Two objects collide and bounce apart. Assuming no outside forces act on the system, which best describes the total momentum after the collision?

kg • m/s

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 .

Read the scenario.Mari belongs to an interest group that wants to transform the state’s healthcare system. She is lobbying her state’s senators by recommending a healthcare policy that is being used successfully in another state.

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

Scientists launch a rocket, and they monitor its acceleration and the force exerted by its engines. As the rocket gets higher, the monitors show that the acceleration of the rocket is increasing but the force exerted stays the same. How do Newton’s laws explain why the scientists could expect this to happen?

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 .