2D Collisions Video Lessons

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Problem: A rock with mass 2.0 kg is at rest on a horizontal frictionless surface. A bullet with mass 0.100 kg is traveling due east with a speed of 400 m/s just before it strikes the rock. Just after the collision between the bullet and the rock, the bullet is moving south with a speed of 300 m/s. What is the speed of the rock just after the collision with the bullet? A) 5.0 m/s B) 15.0 m/s C) 25.0 m/s D) 59.2 m/s E) None of the above answers

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Problem Details

A rock with mass 2.0 kg is at rest on a horizontal frictionless surface. A bullet with mass 0.100 kg is traveling due east with a speed of 400 m/s just before it strikes the rock. Just after the collision between the bullet and the rock, the bullet is moving south with a speed of 300 m/s. What is the speed of the rock just after the collision with the bullet?

A) 5.0 m/s

B) 15.0 m/s

C) 25.0 m/s

D) 59.2 m/s

E) None of the above answers

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the 2D Collisions concept. You can view video lessons to learn 2D Collisions. Or if you need more 2D Collisions practice, you can also practice 2D Collisions practice problems.

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Our expert Physics tutor, Jeffery took 5 minutes and 53 seconds to solve this problem. You can follow their steps in the video explanation above.

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Based on our data, we think this problem is relevant for Professor Perry's class at TAMU.