This topic contains a solution. Click here to go to the answer

Author Question: A ball is launched from ground level at 30 m/s at an angle of 25 above the horizontal. How far does ... (Read 143 times)

yoroshambo

  • Hero Member
  • *****
  • Posts: 566
A ball is launched from ground level at 30 m/s at an angle of 25 above the horizontal. How far does it go before it is at ground level again?
 a. 14 m
  c. 43 m
  b. 70 m
  d. 86 m

Question 2

Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped). His x-ray vision tells him Lois LaTour is inside. If Superguy is 1.00 km away from the tower, and the elevator falls from a height of 2.1  102 m, how long does Superguy have to save Lois, and what must be his average speed?
 a. 4.5 s, 200 m/s
  c. 7.0 s, 140 m/s
  b. 6.5 s, 150 m/s
  d. 9.0 s, 110 m/s



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

livaneabi

  • Sr. Member
  • ****
  • Posts: 328
Answer to Question 1

B

Answer to Question 2

B





 

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

For a complete list of videos, visit our video library