Question 4 of 34
1 Point
Liz and Jacqueline each hit a golf ball off the top of an ocean...
Physics, 27.03.2020 16:45, genyjoannerubiera
Question 4 of 34
1 Point
Liz and Jacqueline each hit a golf ball off the top of an ocean cliff. Liz's ball
has a horizontal velocity of 20 m/s and a vertical velocity of 1 m/s.
Jacqueline's ball has a horizontal velocity of 20 m/s and a vertical velocity of
2 m/s. Which of the following statements is true?
O
A. The two balls will stay in the air the same time, but Jacqueline's
will travel farther,
O
B. Liz's ball will stay in the air longer and travel farther,
O
C. The two balls will stay in the air the same time, but Liz's will travel
farther
O
D. Jacqueline's ball will stay in the allonger and travel farther,
Answers: 3
Physics, 22.06.2019 03:30, sere50
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 12:20, drewefielder6198
Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.
Answers: 2
Physics, 22.06.2019 13:40, youngbeauty17
Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?
Answers: 1
Mathematics, 13.08.2020 22:01