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
lana66690 [7]
3 years ago
5

On a very muddy football field, a 110kg linebacker tackles an 85kg halfback. Immediately before the collision, the linebacker is

slipping with a velocity of 8.5m/s north and the halfback is sliding with a velocity of 7.2m/s east. i have no idea how to even set up this problem .. a walk through would be appreciated (:
Physics
1 answer:
Alchen [17]3 years ago
6 0
<span>Using conservation of energy and momentum you can solve this question. M_l = mass of linebacker
M_ h = mass of halfback
V_l = velocity of linebacker
V_h = velocity of halfback

So for conservation of momentum,
rho = mv

M_l x V_li + M_h x V_hi = M_l x V_lf + M_h x V_hf

For conservation of energy (kinetic)
E_k = 1/2mv^2/ 1/2mV_li^2 + 1/2mV_{hi}^2 = 1/2mV_{lf}^2 + 1/2mV_{hf}^2

Where i and h stand for initial and final values.
We are already told the masses, \[M_l = 110kg\] \[M_h = 85kg\] and the final velocities \[V_{fi} = 8.5ms^{-1}\] and \[V_{ih} = 7.2ms^{-1} </span>
You might be interested in
If velocity is positive, which woul
shusha [124]

Answer:

C. An inital volocity that is faster than the final volocity

Explanation:

.

5 0
3 years ago
Which of the following is true about a planet orbiting a star in uniform circular motion? A. The direction of the velocity vecto
Luda [366]
<span>As it is uniform circular motion therefore speed is constant. Therefore we can rule out option B. Also in circular motion the direction of velocity vector changes therefore velocity can't be constant. Therefore option B is incorrect as well. Also centripetal acceleration is always towards the center so option D is wrong as well. That implies option A is correct.</span>
4 0
3 years ago
Read 2 more answers
Objects 1 and 2 attract each other with a electrostatic force of 72.0 units. If the charge of object 1 is doubled AND the charge
lbvjy [14]

Answer:

432 units

Explanation:

Let the charges be q and Q separated by a distance r. The electrostatic force , F = kqQ/r² = 72 units. If q = 2q and Q = 3Q, then the new electrostatic force is

F = k × 2q × 3Q/r² = 6kqQ/r² = 6 × 72 = 432 units

5 0
3 years ago
If a dog runs 25m east and then turns around and runs
Nostrana [21]

Answer:

The dog ran a total distance of 45m but he is only 5m away from the starting line

Explanation: When you add 25 to 20 you get 45 for the total distance and if he ran back in the same direction then you would subtract 20 from 25 and get 5m

8 0
2 years ago
Describe what happens to pressure as the force exerted on a given area increases.
Goryan [66]

That's the definition of pressure ... force on a given area.

So when that force increases, it's an increase in pressure.
4 0
3 years ago
Other questions:
  • Birds which are famous for performing a ritualized mating dance
    6·2 answers
  • Is it true muscle mass affects someones flexibility
    10·1 answer
  • Red, green, and blue light rays each enter a drop of water from the same direction.Which light ray's path through the drop will
    11·1 answer
  • How do gravitational and electic force compare
    8·1 answer
  • An object will have the same mass and weight on the moon as it has on Earth.
    7·1 answer
  • An object in a fluid experiences a buoyant force from the fluid. If the object is completely immersed, on which does the magnitu
    15·1 answer
  • The velocity of an object is the distance it travels per unit time. Suppose the velocity of a gilding bird is measured to be 52.
    6·1 answer
  • Consider the common measurement speed = 55 mph. What is the magnitude quantity?
    10·1 answer
  • David and Fiona want to know about how mass affects the motion of an object. David uses three objects with masses of 2 kg, 3 kg,
    5·1 answer
  • The average 8- to 18-year-old spends __________ per day on average in front of a screen doing very little to no physical activit
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!