tnbuzz6578 tnbuzz6578

21-10-2022
Physics

Answered

145-g baseball is dropped from a tree 12.0 m above the ground. (a) with what speed would it hit the ground if air resistance could be ignored? (b) if it actually hits the ground with a speed of what is the average force of air resistance exerted on it?

Answer :

kumarprabhat kumarprabhat

25-10-2022

The required speed is 15.35 m/s, if air resistance is ignored.

The magnitude of average force of air resistance is 1.0341N.

a) V = √2gh

The required speed is

V = √2(9.8)(12)

V = 15.35m/s

b) W = 1/2m([tex]v^{2}[/tex]-[tex]u^{2}[/tex])

W = (mg - f)h

( (0.145)(9.8) - f)12 = 1/2(0.145)(([tex]8^{2}[/tex]))

(1.421 - f)12 = 4.64

Force of an air resistance = 1.0341N

Learn more about Speed here:

https://brainly.com/question/7359669

#SPJ4

Answer Link

Other Questions

If the monkey is hanging from the tree and is 50 cm tall, what is the minimum velocity needed to just hit the monkey's toe (9.5 m off the ground)?

What is the resistance of a device if there is a current of 1.50A when a potential difference of 4.00V is placed across it?0.3756.002.502.67

at a ballpark a batter hits a baseball at an angle of 37 degrees to the horizontal with initial velocity of 58 m/s if the outfield fence is 3.15 m high and 323a

On massive planet Bravo there is no atmosphere. A penny, a feather, and an 18 wheeler truck all fall off a cliff from 20 m up. Which one will hit the ground bel

A crate is pulled to the right with a force of 82.0 N, to the left with a force of 115 N, upward with a force of 565 N, and downward with a force of 236 N. a. F

A 131-Newton horizontal force is exerted upon a 4.7-kg box to move it across a level surface at a constant velocity of 1.9 m/s. The force of friction encountere

A .15 kg is thrown in a straight line with a force of 10 N. If a perpendicular cross wind exerts a force of 2.2 N on the ball, what is the acceleration of the b

A leftward force of 50 N is applied to an 8 kg object to move it across a rough surface with a leftward acceleration of 5 m/s/s. Determine the gravitational for

Use the diagram below to answer the following problems. What is the total voltage in each circuit? b. How much current would be measured in each circuit if the

(30 POINTS) A body with a mass of 3kg is rotating around its axis at a constant speed, and completes one round in 20s what's its angular speed in rad/s?