Answer to Question #209386 in Physics for malak

Question

1. A 40 W motor is now used to launch the rocket at an angle of [R 60 U] (m = 240g), The launcher can fire 5 rockets each second. *Neglect air resistance*
2. What work was put into launching a single rocket?  (2 marks)
3. What was the speed of the rocket 1.3m above the ground? (4 marks)
4. When the rocket reaches its maximum height, it is 3.4 m above the ground.  What is the speed at this height? (2 marks)
5. How high above the ground is the rocket if its speed is 7 m/s? (2 marks)
6. The rocket ends up hitting a sand castle as it falls towards the ground. If it travels through the castle for 15cm before stopping, determine the average force friction the rocket encounters (2 marks)

Answer 1

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