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
kati45 [8]
3 years ago
12

A ball rolls 6.0 meters as its speed changes from 15 meters per second to 10 meters per second. What is the average speed of the

ball as it rolls the 10 meters? 1) 2.5m/s 2) 10m/s 3) 12.5m/s 4) 15m/s (Please show calculation)
Physics
1 answer:
antoniya [11.8K]3 years ago
6 0
Initial speed, u = 15 m/s
Final speed, v = 10 m/s
Distance traveled, s = 6.0 m

The acceleration, a, is determined from
u² + 2as = v²
(15 m/s)² + 2*(a m/s²)*(6.0 m) = (10 m/s)²
225 + 12a = 100
12a = -125
a = -10.4167 m/s²

The time, t, for the velocity to change from 15 m/s to 10 m/s is given by
(10 m/s) = (15 m/s) - (10.4167 m/s²)*(t s)
10 = 15 - 10.4167t
t = 0.48 s

The average speed is
(6.0 m)/(0.48 s) = 12.5 m/s

Answer: 12.5 m/s

You might be interested in
Explain relative velocity.
xxTIMURxx [149]

Answer:

The relative velocity of an object A with respect to another object B.

Explanation:

The relative velocity of an object A with respect to another object B is the velocity that object A would appear to have to an observer situated on object B moving along with it.

4 0
3 years ago
Control rods in a nuclear reactor are used to:
kiruha [24]
B.absorb neutrons to prevent chain reactions which become uncontrollable
7 0
3 years ago
Read 2 more answers
PLEASE SOLVE FAST!!! If the average American watches hours of TV every day , how many minutes will be spent in front of the TV b
masha68 [24]

Answer:

5694000 min

Explanation:

Let's suppose the average American watches 4 hours of TV every day. First, we will calculate how many minutes they watch per day. We will use the conversion factor 1 h = 60 min.

(4 h/day) × (60 min/1 h) = 240 min/day

They watch 240 minutes of TV per day. Now, let's calculate how many minutes they watch per year. We will use the conversion factor 1 year = 365 day.

240 min/day × (365 day/year) = 87600 min/year

They watch 87600 min/year. Finally, let's calculate how many minutes they spend watching TV in 65 years.

87600 min/year × 65 year = 5694000 min

6 0
3 years ago
How do microwaves cook food or heat water?
Effectus [21]
Microwave<span> ovens are so quick and efficient because they channel </span>heat<span> energy directly to the molecules (tiny particles) inside </span>food<span>. </span>Microwaves heat food<span> like the sun heats your face—by radiation. A </span>microwave<span> is much like the electromagnetic waves that zap through the air from TV and radio transmitters</span>
7 0
3 years ago
Timed please hurry
vladimir1956 [14]
The answer is D. disorganized
5 0
3 years ago
Read 2 more answers
Other questions:
  • In which situation can you be at rest and moving at the same time?
    15·2 answers
  • Calculate the speed of an object that tavels 62.43m in 38.4s
    8·1 answer
  • In the absence of air, why does the horizontal component of velocity for a projectile remain constant while the vertical compone
    15·1 answer
  • A ____ mirror will diverge light rays. <br> a. convex <br> b. plane <br> c. concave
    9·2 answers
  • During World War I, the Germans had a gun called Big Bertha that was used to shell Paris. The shell had an initial speed of 0.88
    9·1 answer
  • What is the critical angle of a light beam passing drim a medium(n=2) to a medium (n=1.5)
    15·1 answer
  • Which is the product of cellular respiration? A. ATTP B. light C. oxygen D.sugar
    8·1 answer
  • 52.13 dg = ___________ mg <br> someone please help me
    11·2 answers
  • A light with a second-order bright band forms a diffraction angle of 30. 0°. The diffraction grating has 250. 0 lines per mm. Wh
    10·2 answers
  • The side length of a square is modeled by s=A, where A is the area of the square. Graph the function. What is the side length of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!