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
weqwewe [10]
3 years ago
7

A car whose total mass is 800kg travelling with a uniform velocity of 20m/s suddenly observes a stationary dog 50m ahead on its

path. If the total force applied on the braking system on the car by the driver is 2000N, what would happen? ​
Physics
1 answer:
maxonik [38]3 years ago
7 0

Answer:

The driver hits the stationery dog because the applied force is less than required force

Explanation:

Kinetic energy will be given by

KE=0.5mv^{2} where m is the mass of the vehicle and v is the speed/velocity of the vehicle.

Substituting 800 Kg for m and 20 m/s for v we obtain

KE=0.5*800*(20 m/s)^{2}=160,000

Frictional force by vehicle pads is given by

Fr=\frac {KE}{d} where d is the distance moved

Substituting 160000 for KE and 50 m for d we obtain

Fr=\frac {160000}{50}=3200 N

Therefore, the vehicle hits the dog since the required force is 3200N but the driver applied only 2000 N

You might be interested in
1. ________________electricity is the type of electricity commonly used in homes and businesses throughout the world.
amid [387]
Number 1 is letter A
3 0
3 years ago
How much force does it take to accelerate a 2000 kg car at 1m/s^2
Dmitry [639]

Answer:

2000 N

Explanation:

F=ma

m=2000 kg

a=1m/s^2

F=(2000 kg)(1m/s^2)

F=2000 N

4 0
2 years ago
Where a subducting plate slides beneath the lithosphere, melting takes place and a(n) ____ is created?
11111nata11111 [884]

under ground cave will be created


3 0
3 years ago
Explain a lever and a pivot in a full sentence​
worty [1.4K]

Answer:

The lever is a movable bar that pivots on a fulcrum attached to a fixed point. The lever operates by applying forces at different distances from the fulcrum, or a pivot. As the lever rotates around the fulcrum, points farther from this pivot move faster than points closer to the pivot.

IF HELPED MARK AS BRAINLIEST

4 0
3 years ago
Which value is represented by the slope of the line?
netineya [11]

The slope of the line is

(change in ' y ' between the ends)  /  (change in ' x ' between the ends)

Slope = (630g - 0) / (70 cm^3 - 0)

Slope = (630 / 70) g/cm^3

<em>Slope =  9.0 g/cm^3</em>

5 0
3 years ago
Other questions:
  • Difference between relaxation time and collision time?
    7·2 answers
  • How do lines of latitude affect how direct or indirect the Sun’s rays are on the Earth?
    8·1 answer
  • Why is it safe to watch an eclipse of the Moon but not an eclipse of the Sun
    15·1 answer
  • You work for the city water department and need to pump 3400 liters/minute of water from a tank at ground level into a vented (i
    5·1 answer
  • An object accelerating may be changing in what two ways
    11·1 answer
  • A wheel is rotating at a rate of 2.0 rev every 3.0s. through what angle, in radian , does the wheel rotate in 1.0s?​
    13·1 answer
  • Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two c
    14·1 answer
  • What is the name of the upward force<br> exerted on a boat in water?
    6·2 answers
  • PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE H
    11·1 answer
  • When driving a Toyota avensis car along a straight road for 16.5km at
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!