What is its velocity just before it hits the ground

Assignment Help Physics

Reference no: EM13102534

A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 81.0 m/s at ground level. The engines then fire, and the rocket accelerates upward at 4.20 m/s2 until it reaches an altitude of 1060 m. At that point its engines fail, and the rocket goes into free fall, with an acceleration of ?9.80 m/s2. (You will need to consider the motion while the engine is operating and the free-fall motion separately.) (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?

Reference no: EM13102534

Questions Cloud

Using binomial distribution find probability : Using binomial distribution find the probability that 2 or 3 women in a sample of 20 will never be married.

How many electrons would have to be added : How many electrons would have to be added to one of these spheres to make it electrically neutral?

Analyzing two independent small samples : In analyzing two independent small samples you notice that the standard deviation for both samples are the same. How does this affect the S2p (the pooled variance)? Explain your answer.

Probability of height : The heights of north American women are normally distributed with a mean of 64 inches and a standard deviation of 2 inches.

What is its velocity just before it hits the ground : A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 81.0 m/s at ground level. The engines then fire.

Mean body mass index for boys age : The mean body mass index (BMI) for boys age 12 is 23.6. an investigator wants to test if the BMI is higher in boys age 12 living in new york city.

Decision-maximizing expected value : The concessions manager at the Clemson vs. USC football game must decide whether to have the vendors sell sun visors or umbrellas. There is a 30% chance of rain

Standard deviation of the difference : How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of dri..

Question on probability - statistics : Give a variable that could be used to stratify the population for each of the following studies. List at least four subcategories for each variable.

User Account

All Pages