1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zarrin [17]
2 years ago
8

A basketball is tossed up at an initial speed of 20 m/s.

Physics
1 answer:
qwelly [4]2 years ago
4 0

Gravity slows the upward speed of any rising object by 9.8 m/s every second.

If the ball is tossed upward at 20 m/s, then it's at the top of its arc and its speed has dwindled to zero in (20/9.8) = 2.04 seconds.

During that time, its starting speed is 20 m/s and its ending speed is zero, so its AVERAGE speed all the way up is (1/2) (20 + 0)  =  10 m/s .

Sailing upward for 2.04 seconds at an average speed of 10 m/s, the ball rises to (2.04 x 10)  =  <em>20.4 meters.</em>

You might be interested in
A ball of moist clay falls 17.3 m to the ground. It is in contact with the ground for 24.0 ms before stopping. (a) What is the a
gizmo_the_mogwai [7]

Answer:

Acceleration,  767.08\ m/s^2

Explanation:

Given that,

Height from a ball falls the ground, h = 17.3 m

It is in contact with the ground for 24.0 ms before stopping.

We need to find the average acceleration the ball during the time it is in contact with the ground.

Firstly, find the velocity when it reached the ground. So,

v^2=u^2+2ah

u = initial velocity=0 m/s

a = acceleration=g

v=\sqrt{2gh} \\\\v=\sqrt{2\times 9.8\times 17.3} \\\\v=18.41\ m/s

It is in negative direction, u = -18.41 m/s

Let a is average acceleration of the ball. Consider, v = and u = -18.41 m/s.

a=\dfrac{v-u}{t}\\\\a=\dfrac{0-18.41}{24\times 10^{-3}}\\\\a=767.08\ m/s^2

So, the average acceleration of the ball during the time it is in contact is 767.08\ m/s^2.

4 0
3 years ago
A motor produces less mechanical energy than the energy it uses because the motor?
In-s [12.5K]
<span>A motor produces less mechanical energy than the energy it uses because the motor looses some energy to heat.</span>
3 0
2 years ago
Use the following terms in the same sentence:proton, neutron ,and isotope
UkoKoshka [18]
Atoms of the same element having equal numbers of protons, but different numbers of neutrons is called isotope.
8 0
3 years ago
If you need 40.0 Nm of torque in order to loosen a nut on a wn
KonstantinChe [14]

Answer:

0.301 m

Explanation:

Torque = Force × Radius

τ = Fr

40.0 Nm = 133 N × r

r = 0.301 m

The mechanic must apply the force 0.301 m from the nut.

6 0
2 years ago
12. Which of the following statements about
aliya0001 [1]
A seems to be correct
8 0
2 years ago
Other questions:
  • Sandy is whirling a ball attached to a string in a horizontal circle over his head. If Sandy doubles the speed of the ball, what
    14·1 answer
  • Galileo's contribution to the study of motion
    9·1 answer
  • WILL MARK AS BRAINLIEST IF CORRECT ANSWERS PLZ HELP 15 PTS!!!!!!
    14·2 answers
  • If a baseball has a negative velocity and a negative acceleration, its speed is
    8·1 answer
  • PLEASE HELP FAST
    11·1 answer
  • What is the mass of an object that accelerates at 5 m/s2 when pushed with 100 N?
    14·1 answer
  • SOMEONE PLEASE ANSWER IM DESPRATE AND NOONES ANSWERING MY QUESTIONS, ILL GIVE U A PICTURE OF MY CAT TO BRIGHTEN YOUR DAY AND BRA
    15·1 answer
  • We have seen that when you generate a wave on a stretched spring, as long as the medium doesn’t change (that is, the tension and
    7·1 answer
  • If a load of snow contains 3 tons it will weigh how many pounds
    9·1 answer
  • I desperately need help with my Physics Exam I am failing this class will mark Brainliest to whoever helps the most: PART 1 (I d
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!