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
Sindrei [870]
3 years ago
6

An athlete of mass 70.0 kg applies a force of 500 N to a 30.0 kg luge, which is initially at rest, over a period of 5.00 s befor

e jumping onto the luge. Assuming there is no friction between the luge and the track on which it runs, what is its velocity after the athlete jumps on?
Physics
1 answer:
ira [324]3 years ago
6 0
Force = (mass) x (acceleration)

Acceleration = (force) / (mass)

Acceleration of the luge = (500 N) / (30 kg) = 16 and 2/3 m/s²

After accelerating at that rate for 5 sec, its speed is (16-2/3) x (5) = 83-1/3 m/s .

(I pause slightly at this point, to reflect that this thing is now moving
at about 186 miles per hour.  I question that, and I check my work.
I reassure myself with two thoughts:  1). Maybe those things really
do move at that kind of speeds.  I don't know.  2). I was given the
numbers, and I didn't make them up, so I'm only responsible for the
math, not for the plausibility of the solution.) 

So the luge is moving at 83-1/3 m/s when he jumps on.  In order to maintain
that force against it for 5 seconds, he had to accelerate himself to almost-
if-not-totally the same speed ... necessary, no matter how implausible.

So, although it hasn't been mentioned, the pusher is also doing an enormous
amount of other work just to accelerate himself, and when he jumps aboard,
his own velocity already matches that of his luge.  I'm going to say that
after the jump, they continue on, together, coupled as one, at the same
speed as just before the jump.

Their speed together is <em>83-1/3 m/s</em> .

We can't state their <em>velocity</em>, because no information is given regarding
the direction of the track.
You might be interested in
Which statement about magnetic poles is accurate?
Mademuasel [1]
I see I'm late but I believe it's A. , opposites attract. I'm taking the test right now lol
6 0
3 years ago
The mass of earth 6*10^24kg and radius is 400kg Now find the value of acceleration due to gravity when a object is 3600km from t
vlada-n [284]
I don’t worry wewwwww it is a good time to get it done lol lol i don’t worry about it lol lol i lol
5 0
2 years ago
After the body has begun shivering, what explains why it would stop shivering?
Oksana_A [137]
The body shivers to produce energy and it uses the energy to keep it warm. The body would stop shivering when it has produced enough energy to keep it warm and the atmosphere around it has got warmer
3 0
3 years ago
Read 2 more answers
How is fission used to produce electricity? a. the heat generated from the fission reaction is used to boil water, which rises a
denis-greek [22]

According to the research, the correct option is a. The heat generated from the fission reaction is used to boil water, which rises and spins a turbine.

<h3>How is fision used to produce electricity?</h3>

In fusion, two atoms come together to form a larger one, releasing enormous amounts of energy in the process, this is used by generators to produce electricity.

As a result of nuclear fusion, large amounts of heat are generated that are used to produce pressurized steam, which allows mechanical energy to be obtained to start up electric power generators.

Therefore, we can conclude that according to the research, the correct option is a. The heat generated from the fission reaction is used to boil water, which rises and spins a turbine.

Learn more about fision reaction here: brainly.com/question/13207914

#SPJ1

4 0
2 years ago
Name two energy transformations that occur as Adeline pedals her bicycle up a steep hill and then coasts down the other side.
Juliette [100K]

Potential energy is first transformed into kinetic energy as she pedals, then gravitational as she coasts down the hill.

6 0
3 years ago
Read 2 more answers
Other questions:
  • When you double your speed, it takes about _____ times as much distance to stop?
    9·1 answer
  • A bowling ball of mass 5 kg hits a wall going 7 m/s and rebounds at a speed of 2 m/s. What was the impulse applied to the bowlin
    6·2 answers
  • Two resistors, A and B, are connected in a series circuit with a battery. The resistance of A is twice that of B. Which resistor
    9·1 answer
  • What is the magnitude of the electric field at the point if the electric potential in the region is given by V 2.00xyz2, where V
    13·1 answer
  • It takes 15 minutes to walk to the mall from your house at an average velocity of 1.1 m/s to the east. What is the displacement
    12·1 answer
  • 1.a machine gun fires a ball with an initial velocity of 600m/s with an elevation of 30° with respect to the ground neglecting a
    9·1 answer
  • spotlight on a boat is 2.5 m above the water, and the light strikes the water at a point that is 8.0 m horizontally displaced fr
    11·1 answer
  • Using simple language, explain how your demonstration shows the effect of distance on electric forces. Use the terms electric ch
    10·2 answers
  • The force required to maintain an object at a constant speed while on frictionless ice is
    11·1 answer
  • Help please, this is unit about work, power, force in physics.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!