Vertical Motion and Free Fall Video Lessons

Concept

Problem: A catapult launches a test rocket vertically upward from a well giving the rocket an initial speed of 80.0 m/s at ground level. The engines then fire and the rocket accelerates upward at 4.00 m/s2 until it reaches an altitude of 1 000 m. At that point its engines fail and the rocket goes into free fall with an acceleration of -9.80 m/s2. (a) For what time interval is the rocket in motion above the ground? (b) What is its maximum altitude? (c) What is its velocity just before it hits the ground? (You will need to consider the motion while the engine is operating and the free-fall motion separately.)

Problem Details

A catapult launches a test rocket vertically upward from a well giving the rocket an initial speed of 80.0 m/s at ground level. The engines then fire and the rocket accelerates upward at 4.00 m/s2 until it reaches an altitude of 1 000 m. At that point its engines fail and the rocket goes into free fall with an acceleration of -9.80 m/s2. (a) For what time interval is the rocket in motion above the ground? (b) What is its maximum altitude? (c) What is its velocity just before it hits the ground? (You will need to consider the motion while the engine is operating and the free-fall motion separately.)

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 Vertical Motion and Free Fall concept. You can view video lessons to learn Vertical Motion and Free Fall. Or if you need more Vertical Motion and Free Fall practice, you can also practice Vertical Motion and Free Fall practice problems.

What professor is this problem relevant for?

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