Question

- o v -IV N = Wy = mg cos 30o = 424 N Questions 20, 21: A projectile is fired horizontally from the top of a building at 20 m
0 0
Add a comment Improve this question Transcribed image text
Answer #1

som since we ham fired harusntally there is no urtical component of elocity initially Applying equation of malias in vertical

Comment for any further help.

Add a comment
Know the answer?
Add Answer to:
- o v -IV N = Wy = mg cos 30o = 424 N Questions 20,...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 11. A motor spins a disk (Idisk = 24.2 kg*m2) with a torque of 39 N*m,...

    11. A motor spins a disk (Idisk = 24.2 kg*m2) with a torque of 39 N*m, and a 18 N frictional force acts on the disk at a radius of 1.3 m. Attached to the disk at a radius of 1.8 m is a 10 kg mass. What is the magnitude of the angular acceleration in rad/s2 of the system? 12. A 1.4-kg projectile is fired from level ground. The vertical component of the initial velocity is 83 m/s and...

  • 1. A projectile is fired straight upward at 170 m/s near the surface of Planet X,...

    1. A projectile is fired straight upward at 170 m/s near the surface of Planet X, which has no atmosphere and where the acceleration due to gravity is g = 5 m/s2. (a) What is the acceleration of the projectile halfway to the top of its trajectory? [1] (b) Is the projectile in equilibrium at the top of its trajectory? Explain. [1.5] (c) How fast is it moving at the instant it reaches the top of its trajectory? (0.5] (d)...

  • Projectile Motion

    A cannonball is fired horizontally from the top of a cliff. The cannon is at height H = 70.0 m above ground level, and the ball is fired with initial horizontal speedv_0. Assume acceleration due to gravity to be g = 9.80 m/s^2.Assume that the cannon is fired at time t = 0 and that the cannonball hits the ground at time t_g. What is the y position of the cannonball at the time tg/2?I found it tg/2 to be...

  • If a projectile is fired with an initial velocity of vo meters per second at an...

    If a projectile is fired with an initial velocity of vo meters per second at an angle a above the horizontal and air resistance is assumed to be negligible, then its position after t seconds is given by the parametric equations x = (vo cos(a)t y = (vo sin(a)t - +- 1012 where g is the acceleration due to gravity (9.8 m/s2). (Round your answers to the nearest whole number.) (a) If a gun is fired with a = 30°...

  • A.) In a fit, a toddler throws straight down his favorite 3 kg toy with an...

    A.) In a fit, a toddler throws straight down his favorite 3 kg toy with an initial velocity of 2.5 m/s. What is the magnitude of the change in velocity of the toy from t = 0.24 seconds to t = 0.48 seconds? B.) A motor spins a disk (Idisk = 24.4 kg*m2) with a torque of 40 N*m, and a 19 N frictional force acts on the disk at a radius of 1.6 m. Attached to the disk at...

  • 4. Use the velocity versus time v() graph below to answer the following questions: 20 m/s...

    4. Use the velocity versus time v() graph below to answer the following questions: 20 m/s 10 m/s 10 s 20 s 30 s -10 m/sL a. What is the displacement between 0-10 seconds? b. What is the displacement between 0-35 seconds? c. What is the acceleration at t- 10 seconds?

  • 4. Use the velocity versus time v(t) graph below to answer the following questions: Vx 20...

    4. Use the velocity versus time v(t) graph below to answer the following questions: Vx 20 m/s 10 m/s 10 s 20 s 30 s 10 m/s a. What is the displacement between 0-10 seconds? b. What is the displacement between 0-35 seconds? C. What is the acceleration at t = 10 seconds?

  • 1. A 30 N force is directed at an angle of 50° W of N x-component:...

    1. A 30 N force is directed at an angle of 50° W of N x-component: A. -19 N B. -23 N C. -36 N D. 19N E. 23 N y-component: A. -19 N B. -23N C. -36 N D. 19 N E. 23 N west. What is the train's average acceleration? A. 10 kmh2,W B. 43 km/h2, w с. 10 kmh?. E D. 43km/h, E E. 53kmh?, E 2. The velocity of a train is 80 km/h west. One...

  • (7-10) A golf ball is hit horizontally at 40 m/s off of a 100 m tall...

    (7-10) A golf ball is hit horizontally at 40 m/s off of a 100 m tall building (don't try this). The trajectory of the ball is shown. Use g = 10 m/s2 for this problem and neglect air resistance. 9. What speed is the ball traveling at after 3 seconds? a) 20 m/s b) 30 m/s c) 40 m/s d) 50 m/s e) 60 m/s 10. What is the magnitude of the ball's acceleration after 3 seconds? a) 0 m/s2...

  • please tell me the answer and tell me why you chose it please help me!! i...

    please tell me the answer and tell me why you chose it please help me!! i would appreciate it This page LUNClusions on the back of C) 9.8 m/s o D) 10 miles per hour 18) Calculate the velocity acciate the velocity at time t=2s for a ball the A) 10.1 m/s B) -5.2 m/s C) 0.3 m/s D) 4.6 m/s straight up with an initial velocity of 15 m 19) A rock is tossed skyward at an angle of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT