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
enot [183]
3 years ago
12

How much force is needed to stop a 90-kg soccer player if he decelerates at 15 m/s^2?

Physics
1 answer:
svet-max [94.6K]3 years ago
8 0
We have: F = m×a
Here, m = 90 Kg
a = 15 m/s²

Substitute their values into the expression:
F = 90 × 15
F = 1350 N

In short, Your Answer would be Option D

Hope this helps!
You might be interested in
How are force, mass and acceleration related?
Zepler [3.9K]

Newton's 2nd law of motion:

F = ma

F is force, m is mass, and a is acceleration.

6 0
3 years ago
What is the net power needed to change the speed of a 1600-kg sport utility vehicle from 15.0 m/s to 40.0 m/s in 4.00 seconds
Sergio039 [100]

Answer:

The net power needed to change the speed of the vehicle is 275,000 W

Explanation:

Given;

mass of the sport vehicle, m = 1600 kg

initial velocity of the vehicle, u = 15 m/s

final velocity of the vehicle, v = 40 m/s

time of motion, t = 4 s

The force needed to change the speed of the sport vehicle;

F = \frac{m(v-u)}{t} \\\\F = \frac{1600(40-15)}{4} \\\\F = 10,000 \ N

The net power needed to change the speed of the vehicle is calculated as;

P_{net} = \frac{1}{2} F[u + v]\\\\P_{net} = \frac{1}{2} \times 10,000[15 + 40]\\\\P_{net} = 275,000 \ W

3 0
3 years ago
Which of the following has potential but not kinetic energy?
gavmur [86]

The answer would be option D "a ball sitting on a shelf." Potential energy is the amount of energy a object has while it's at rest.. (or not moving) Kinetic energy is how much energy a object is while it's moving. So in this case it's option D because a ball sitting on a shelf isn't moving therefore it has potential energy. It's not option A because thats a example of kinetic energy since how the roller coaster is moving. It's not option B because it's kinetic energy because the bike is moving. It's also not option C because it's kinetic energy because the bird is moving.


Hope this helps!

7 0
3 years ago
Light traveling through air strikes the surface of the four different materials below. which material reflects light but doesn't
Dmitriy789 [7]
B....……................
7 0
3 years ago
Read 2 more answers
On a snowy day, max (mass = 15 kg) pulls his little sister maya in a sled (combined mass = 20 kg) through the slippery snow. max
sesenic [268]

Work done by a given force is given by

W = F.d

here on sled two forces will do work

1. Applied force by Max

2. Frictional force due to ground

Now by force diagram of sled we can see the angle of force and displacement

work done by Max = W_1 = Fdcos\theta

W_1 = 12*5cos15

W_1 = 57.96 J

Now similarly work done by frictional force

W_2 = Fdcos\theta

W_2 = 4*5cos180

W_2= -20 J

Now total work done on sled

W_{net}= W_1 + W2

W_{net} = 57.96 - 20 = 37.96 J

7 0
3 years ago
Other questions:
  • The atomic model that describes an atom as a spherical object containing a certain number of electrons trapped in a mass of posi
    7·2 answers
  • Janel did an experiment to see which spices can kill bacteria. She mixed a spice with bacteria food called agar. She poured the
    7·1 answer
  • The chief by 3 3/4 kg of Apple's 7 1/4 kilograms of peers and 10 1/8 kilograms with orange about how many kilograms of fruit did
    7·2 answers
  • How much heat is given off by 1,000 kg of lead when it solidifies at its melting point?(see the table)
    9·1 answer
  • Find the angle of incidence at which a light beam traveling from a medium having the index of refraction n1 = 2.7 to another med
    7·1 answer
  • Which vector should be negative?
    12·1 answer
  • Each of 100 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first bl
    9·1 answer
  • When the resistance in a circuit remains constant, how are the voltage and current related?
    9·2 answers
  • Fill in the graph for 50 points
    11·2 answers
  • И
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!