All categories

3 years ago

HELP PLEASE!!!!

Physics

1 answer:

olganol [36]3 years ago

7 0

The distance travelled by the ball is 43.2 m

Explanation:

The motion of the ball is a projectile motion, which consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- A uniformly accelerated motion, with constant acceleration (acceleration of gravity) in the downward direction

Here, we want to find the (horizontal) distance travelled by the ball before hitting the ground. Therefore, we can just consider the horizontal motion of the ball.

Since it is a uniform motion, we can write:

$v=\frac{d}{t}$

where

v = 13.5 m/s is the horizontal speed

t = 3.2 s is the time of flight

Solving for d, we find

$d=vt=(13.5)(3.2)=43.2 m$

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

You might be interested in

One end of a 34-m unstretchable rope is tied to a tree; the other end is tied to a car stuck in the mud. The motorist pulls side

anyanavicka [17]

Answer:

Fc = 89.67N

Explanation:

Since the rope is unstretchable, the total length will always be 34m.

From the attached diagram, you can see that we can calculate the new separation distance from the tree and the stucked car H as follows:

L1+L2=34m

$L1^2=L2^2=L^2=2^2+(H/2)^2$ Replacing this value in the previous equation:

$\sqrt{2^2+H^2/4}+ \sqrt{2^2+H^2/4}=34$ Solving for H:

$H=\sqrt{52}$

We can now, calculate the angle between L1 and the 2m segment:

$\alpha = atan(\frac{H/2}{2})=60.98°$

If we make a sum of forces in the midpoint of the rope we get:

$-2*T*cos(\alpha ) + F = 0$ where T is the tension on the rope and F is the exerted force of 87N.

Solving for T, we get the tension on the rope which is equal to the force exerted on the car:

$T=Fc=\frac{F}{2*cos(\alpha) } = 89.67N$

7 0

3 years ago

What is the function of the electron transport chain in cellular respiration. why is oxygen needed for the electron transport ch

SpyIntel [72]

1) The function of the electron transport chain is to pump protons in the mitochondrion inter-membrane, thus building up a proton gradient. This gradient will allow the ATP syntheses.

2) Why we need oxygen for the electron transport chain:
At the end of the electron transport chain is the Oxygen that will accept electrons and picks up protons to form water. If the oxygen molecule is not there the electron transport chain will stop running, and ATP will no longer be produced. Basically, we need the oxygen to produce more ATP.

8 0

3 years ago

when a hockey stick strike a hockey puck and sends it towards the goalie, (thermal, mechanical) energy is being transferred from

velikii [3]

Answer:

Yes... definitely true.. can you tell me what is the question..

Explanation:

Please mark me brainliest :D

And also.. I would appreciate it if you give me 5 stars and a thanks.. :D

8 0

2 years ago

A hockey player applies an average force of 80.0 N to a

denpristay [2]

Answer:

$Impulse = 8.0Ns$

Explanation:

Given

$Force = 80.0N$

$Mass = 0.25kg$

$Time = 0.10s$

Required

Determine the impulse

The impulse is calculated as follows:

$Impulse = Force * Time$

Substitute values for Force and Time

$Impulse = 80.0N * 0.10s$

$Impulse = 8.0Ns$

Hence, the impulse experienced is 8.0Ns

5 0

3 years ago

According to current scientific thinking how did the solar system that contains earth form

KiRa [710]

Scientists think the solar system formed around 4.6 billion years ago from a cloud of dust and gas known as a solar nebula. Gravity collapsed the material on itself as it began to spin. This formed the sun in the middle. The planets formed when rock joined together in clumps and became bigger and bigger. And thus, our solar system was formed. Hope this helped

6 0

3 years ago

Read 2 more answers