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
stepladder [879]
2 years ago
10

-A 180 kg hippo is riding a bicycle at a speed of 6.0

Physics
1 answer:
Vlad1618 [11]2 years ago
8 0

Answer:

0.0675 seconds

Explanation:

From the question,

We apply newton's second law of motion

F = m(v-u)/t.................... Equation 1

Where F = force exert by the brake, v = final speed, u = initial speed m = mass of the bicycle, t = time.

make t the subject of the equation

t = m(v-u)/F................... Equation 2

Given: m = 180 kg, u = 6.0 m/s, v = 0 m/s (comes to stop), F = -1600 N ( agianst the dirction of motion)

Substitute these value into equation 2

t = 180(0-6.0)/-1600

t = -1080/-1600

t = 0.0675 seconds.

You might be interested in
The blackbody curve for a star named Zeta is shown below. The most intense radiation for this star occurs in what spectral band?
zmey [24]

Answer:Visible lighlight

Explanation:

4 0
2 years ago
A _____ is a device that multiplies force or increases speed and makes work easier.
max2010maxim [7]
Machine is the answer :)
4 0
3 years ago
Read 2 more answers
What type of acceleration does an object moving with constant speed in a circular path experience?Select one:A) constant acceler
olga_2 [115]

ANSWER:

D) centripetal acceleration.

STEP-BY-STEP EXPLANATION:

When a body performs a uniform circular motion, the direction of the velocity vector changes at every instant. This variation is experienced by the linear vector, due to a force called centripetal, directed towards the center of the circumference that gives rise to the centripetal acceleration.

Therefore, the answer is centripetal acceleration.

3 0
1 year ago
a vehicle travels at a constant speed of 65 mph for 4 hours how far has this vehicle travelled in this time
Nostrana [21]
260 miles.................
3 0
3 years ago
If the coefficient of kinetic friction between tires and dry pavement is 0.84, what is the shortest distance in which you can st
liberstina [14]

Answer:

The shortest distance in which you can stop the automobile by locking the brakes is 53.64 m

Explanation:

Given;

coefficient of kinetic friction, μ = 0.84

speed of the automobile, u = 29.0 m/s

To determine the  the shortest distance in which you can stop an automobile by locking the brakes, we apply the following equation;

v² = u² + 2ax

where;

v is the final velocity

u is the initial velocity

a is the acceleration

x is the shortest distance

First we determine a;

From Newton's second law of motion

∑F = ma

F is the kinetic friction that opposes the motion of the car

-Fk = ma

but, -Fk = -μN

-μN = ma

-μmg = ma

-μg = a

- 0.8 x 9.8 = a

-7.84 m/s² = a

Now, substitute in the value of a in the equation above

v² = u² + 2ax

when the automobile stops, the final velocity, v = 0

0 = 29² + 2(-7.84)x

0 = 841 - 15.68x

15.68x = 841

x = 841 / 15.68

x = 53.64 m

Thus, the shortest distance in which you can stop the automobile by locking the brakes is 53.64 m

4 0
3 years ago
Other questions:
  • Please help me on this question, it would mean a lot! Thank you! Only question one, thank you
    12·1 answer
  • Ozone is a molecule in the upper atmosphere that is made up of three atoms of _____.
    5·2 answers
  • A dog sledding team is comprised of a 80.0 kg musher (the person driving the sled), a 21.0 kg sled and four dogs. assume each do
    15·1 answer
  • A material's ability to allow heat or electricity to flow through it...
    14·1 answer
  • a police car drives with a constant speed of 24 miles per hour .how long will it take to travela distance of 72 miles​
    13·1 answer
  • What kind of image is formed by a plane mirror
    9·1 answer
  • A police car waits in hiding slightly off the highway. A speeding car is spotted by the police car doing 40 m/s. At the instant
    11·1 answer
  • tourist travels 1500 miles using two planes. The second plane averages 50 miles per hour faster than the first plane. The touris
    7·1 answer
  • A piece of wire length 30cm and cross sectional area of 0.5mm^2 has a resistance of 5ohms at 20°c. It is then heated to a temper
    5·1 answer
  • How long will it take for a car at rest to accelerate at 7m/s^2 to a speed of 45 m/s
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!