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
Svetach [21]
3 years ago
6

A sprinter has a mass of 80 kg and a KE of 4000 J. What is the sprinter’s speed?

Physics
2 answers:
djyliett [7]3 years ago
8 0
There you go.

Hope this helps!

Sladkaya [172]3 years ago
4 0

               Kinetic Energy  =  (1/2) (mass) (speed)²

                         4,000 J  =  (1/2) (80 kg) (speed)²    

Divide each side
by  40 kg :            4,000 J / 40 kg  =  speed²

                                    100 m²/s²  =  speed²
Square root
each side:                         10 m/s  =  speed
You might be interested in
What would happen to the marbles speed if we had longer tables
Zanzabum

Answer:

The marble will start to decrease in speed

Explanation:

The longer the table is the more the marbles speed would decrease because marbles can only be fast for a certain amount of time

7 0
3 years ago
Read 2 more answers
Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tig
Andru [333]
I=2.27 x 10 to the 3rd power A
5 0
3 years ago
Social problems obstruct the development of society​
aniked [119]

Answer:

This leads to backwardness and lagging in the development of the the society. Social problems such as sickness, poverty , social injustices , corruption , nepotism, tribalism are slowing down the process of development .

8 0
3 years ago
A person with a mass of 72 kg is riding a bicycle is accelerating at a rate of 5m/s on a horizontal surface. What is the weight
nikklg [1K]

Answer:

w = 706.32 [N]

Explanation:

The force due to gravitational acceleration can be calculated by means of the product of mass by gravitational acceleration.

w = m*g

where:

w = weight [N] (units of Newtons)

m = mass = 72 [kg]

g = gravity acceleration = 9.81 [m/s²]

Then we have:

w = 72*9.81\\w = 706.32 [N]

7 0
3 years ago
Which of the following best describes transverse waves?
den301095 [7]

Best Answer: perpendicular to the direction of wave motion

think of you and a friend holding different ends of a rope. you shake your end side to side and the wave travels down to your friend's end. if you pay attention to a given segment of the rope, it moves, but it moves to the right and left while the wave travels forward. in a transverse wave, the constituents of the wave move perpendicular to the direction of motion of the wave itself.

a longitudinal wave, on the other hand, is the opposite. the constituents of the wave alternate moving in the same or opposite direction as the wave moves. this one is more like if you and your friend were holding onto a slinky. you give your end a push towards your friend, and you can see the wave move towards the other end.

hope that helps :D
5 0
3 years ago
Read 2 more answers
Other questions:
  • How can magnet be used to produce an electric current
    11·1 answer
  • Electric current is the flow of charged particles called blank .
    14·2 answers
  • A concave mirror has a focal length of 13.5 cm. This mirror forms an image located 37.5 cm in front of the mirror. Find the magn
    10·1 answer
  • A 37 N object is lifted to a height of 3 meters, What is the potential energy of this object?
    7·1 answer
  • A 10.0-g bullet is fired into a stationary block of wood having mass 5.00 kg. The bullet embeds 10 pts into the block and the sp
    6·1 answer
  • A badger is running at a speed of 1 m/s. If the badger moves that was for 2600 seconds, how far will the badger travel?
    12·1 answer
  • What must the charge (sign and magnitude) of a particle of mass 1.40 gg be for it to remain stationary when placed in a downward
    11·1 answer
  • How can I get brainly ads back? It only gives me the option to get the subscription.
    12·1 answer
  • If the speedometer of a car reads 5 mph, does it mean it is going at a constant speed?
    15·1 answer
  • A bullet with a mass of 4.26 g and a speed of 881 m/s penetrates a tree horizontally to a depth of 4.44 cm. Assume that a consta
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!