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
N76 [4]
3 years ago
14

A high-jumper, having just cleared the bar, lands on an air mattress and comes to rest. Had she landed directly on the hard grou

nd, her stopping time would have been much shorter. Using the impulse-momentum theorem as your guide, determine which one of the following statements is correct.a. the air mattress exerts the same impulse, but a greater net average force, on the high-jumper than does the hard ground
b. the air mattress exerts a greater impulse, and a greater net average force, on the high-jumper than does the hard ground
c. the air mattress exerts a smaller impulse, and a smaller net average force, on the high-jumper than does the hard ground
d. the air mattress exerts a greater impulse, but a smaller net average force, on the high-jumper than does the hard ground
e. the air mattress exerts the same impulse, but a smaller net avg force, on the hj than hg
Physics
1 answer:
attashe74 [19]3 years ago
8 0

Answer:

Explanation:

Impulse = Force x time = change in momentum

F x t = m ( v - u )

In both cases, u are same and v=0

So change in momentum is same

hence , impulse is same.

F = Change in momentum / time

In case of air mattress , time increases

Hence average force decreases .

Option e is correct .

You might be interested in
A rock has a mass of 25kg. The acceleration due to gravity is 10m/s and the height of the rock is 42 m. Find the potential energ
alisha [4.7K]

Answer:

 The potential energy of the rock = 10.5 kN

Explanation:

 Mass of rock = 25 kg

 Acceleration due to gravity = 10 m/s²

 Height = 42 m

 Potential energy, PE = mgh, where m is the mass, g is acceleration due to gravity and h is the height.

 PE = 25 x 10 x 42 = 10500 N = 10.5 kN

 The potential energy of the rock = 10.5 kN

7 0
2 years ago
Read 2 more answers
After creating a prototype, which of the following would not be and appropriate next step in the design process of a new technol
Dafna11 [192]

The answer would be to research the need.  This should have been done before the project began.

6 0
3 years ago
Read 2 more answers
The more ______ an object moves, the more __________ it has (Kinetic Energy)
belka [17]

Answer:

__________

Explanation:

3 0
3 years ago
A 46 g domino slides down a 30 degrees incline at a constant speed. What is the coefficient of friction?
blondinia [14]

Answer:

40

Explanation:

30

6 0
2 years ago
In a low-density cloud, the internal pressure is much too low to support the weight, so the cloud must __________, eventually pr
andrey2020 [161]

The answer to this question is flatten

so the cloud must <u>flatten</u> eventually producing the galaxy s disk.

3 0
3 years ago
Other questions:
  • To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch
    5·1 answer
  • An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula: )
    13·1 answer
  • Three horses are side-by-side on a merry-go-round: one at the edge, one near the axis, and one in between. Each horse has the sa
    10·1 answer
  • Parallel perpendicular or neither y=6x-3 y=-1/6x + 7
    14·1 answer
  • A machine uses a force of 200 newtons to do 20,000 joules of work in 20 seconds. Find the distance the object moved and the powe
    13·1 answer
  • An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
    8·2 answers
  • A car is traveling at 120 km/h (75 mph). When applied the braking system can stop the car with a deceleration rate of 9.0 m/s2.
    14·1 answer
  • You have 3 resistors and a battery to form a closed circuit. Two 2-Ohm resistors are in series with each other. The combination
    10·1 answer
  • Move the red arrow onto the picture to show how you think warm air would move over this area of land and water on a dark cold ni
    14·2 answers
  • Hai điện tích +q và -q (q&gt;0) đặt tại hai điểm a và b với AB=a, M là một điểm nằm trên đường trung trực của AB cách AB một đoạ
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!