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
lara31 [8.8K]
3 years ago
12

A snowball starting at rest rolls down a hill and reaches 5 m/s. If the hill is

Physics
1 answer:
Lostsunrise [7]3 years ago
4 0

Answer:

The acceleration of the snowball is 0.3125

Explanation:

The initial speed of the snowball up the hill, u = 0

The speed the snowball reaches, v = 5 m/s

The length of the hill, s = 40 m

The equation of motion of the snowball given the above parameters is therefore;

v² = u² + 2·a·s

Where;

a = The acceleration of the snowball

Plugging in the values, we have;

5² = 0² + 2 × a × 40

∴ 2 ×  40 × a  = 5² = 25

80 × a = 25

a = 25/80 = 5/16

a = The acceleration of the snowball = 5/16 m/s².

The acceleration of the snowball = 5/16 m/s² = 0.3125 m/s² .

You might be interested in
How many meters did the car go in the first 4 seconds?​
JulijaS [17]
Are there numbers on the y axis?
7 0
3 years ago
If the energy of a photon is 1.32 × 10¯18 j, what is its wavelength in nm?
Katarina [22]
I think I remember hold on let me see if I can solve it
8 0
3 years ago
Read 2 more answers
In 3 seconds a car moving in a straight line increases its speed from 22.4 m/s to 29.1 m/s while a truck increases its speed fro
ANTONII [103]
Is there a picture?
6 0
3 years ago
If a marathon runner averages 9.51 mi/hr, how long does it take him to run a 26.220-mile marathon. Express your answers in hours
ASHA 777 [7]

Explanation:

Speed of the marathon runner, v = 9.51 mi/hr

Distance covered by the runner, d = 26.220 mile

Let t is the time taken by the marathon runner. We know that the speed of the runner is given by total distance divided by total time taken. Mathematically, it is given by :

v=\dfrac{d}{t}

t=\dfrac{d}{v}

t=\dfrac{26.220\ mi}{9.51\ mi/hr}

t = 2.75 hours

Since, 1 hour = 60 minutes

t = 165 minutes

Since, 1 minute = 60 seconds

t = 9900 seconds

Hence, this is the required solution.

7 0
3 years ago
Mary has a mass of 40 kg and sprints at 1 m/s. How much kinetic energy does she have?
Sav [38]

Answer:

20 J

Explanation:

Kinetic energy is given as half of the product of mass and the square of velocity of an object:

KE = \frac{1}{2}mv^2

where m = mass = 40 kg

v = velocity = 1 m/s

Hence, Mary's kinetic energy is:

KE = \frac{1}{2} * 40 * 1^2

KE = 20 * 1 = 20 J

She has a kinetic energy of 20 J.

8 0
3 years ago
Other questions:
  • When 1.14 g of octane (molar mass = 114 g/mol) reacts with excess oxygen in a constant volume calorimeter, the temperature of th
    8·1 answer
  • How much work is done on an object if 10 newtons of force are applied to the object and it moves 2 meters?
    12·1 answer
  • A tightly wound 1000-turn toroid has an inner radius 1.00 cm and an outer radius 2.00 cm, and carries a current of 1.50 A. The t
    14·1 answer
  • An air mass, shown in the image below, that forms over parts of Mexico, Texas, and Arizona will be a _______.
    5·2 answers
  • What happens to the atoms in a star as it goes through its life?
    12·2 answers
  • An object weighs 10N in air and 70N in water .What is it's weight when immersed in a liquid of relative density 1.5?​
    13·1 answer
  • Two in-phase loudspeakers are 3.0 m apart. they emit sound with a frequency of 490 hz. a microphone is placed half-way between t
    12·1 answer
  • Then it is called
    7·1 answer
  • How to measure the weight of an object??? HELP! ​
    7·1 answer
  • What is meant by random assignment?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!