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
Nutka1998 [239]
3 years ago
11

Brittany stands at rest on a skateboard. The combined mass of Brittany and the skateboard is 62 kg. Dave tosses a 3.7-kg pumpkin

to Brittany, and when she catches it, she and the skateboard begin to roll backward with a speed of 0.18 m/s.
What was the speed of the pumpkin?
Physics
1 answer:
Amiraneli [1.4K]3 years ago
5 0

Answer:

3.196 m/s

Explanation:

Parameters given:

Mass of Brittany and the skateboard, M = 62 kg

Mass of pumpkin, m = 3.7 kg

Initial speed of Brittany and the skateboard, U = 0 m/s

Final velocity of Brittany, the skateboard and the pumpkin, V = v = 0.18 m/s

We can solve this problem by applying the principle of conservation of momentum.

It states that the total final momentum of a system is equal to the total initial momentum of the system.

M*U + m*u = M*V + m*v

Where u is the initial velocity of the pumpkin.

Since the final velocity of Brittany and the skateboard is equal to the final velocity of pumpkin:

M*U + m*u = (M + m) *v

Solving this to get u:

(62 * 0) + (3.7 * u) = (62 + 3.7) * 0.18

0 + 3.7u = 65.7 * 0.18

3.7u = 11.826

u = 11.826 / 3.7

u = 3.196 m/s

The initial velocity of the pumpkin was 3.196 m/s.

You might be interested in
3. How does the mass of a proton compare to the mass of an electron?
o-na [289]

Answer:

Proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.

7 0
3 years ago
11. Will the cube in#10 float in water? Will it float in benzene?
densk [106]
Where is the cube I don't see any picture?
5 0
3 years ago
I need help with this problem.
tamaranim1 [39]

Answer:

Explanation:

Line CD

7 0
3 years ago
A van is traveling on a road at a speed of 55 km/h. A girl sitting near the driver of the van throws a paper airplane to a boy a
aivan3 [116]
<span>A van is traveling on a road at a speed of 55 km/h relative to a
stationary observer on the side of the road. A girl sitting near the
driver of the van throws a paper airplane to a boy at the back of the
van with a speed of 2 km/h relative to the girl, the boy, and the van.

The speed of the paper airplane, relative to the same stationary observer
on the side of the road, is (55 - 2) = 53 km/h.  No rounding is necessary.</span>
5 0
3 years ago
Read 2 more answers
What is jupiters orbital period
padilas [110]
11.86 years.  Usually memorized as "12 years".
8 0
3 years ago
Other questions:
  • The momentum of an electron is 1.75 times larger than the value computed non-relativistically. What is the speed of the electron
    13·1 answer
  • Which of the following takes place in the combustion chamber of a gas turbine engine?
    10·1 answer
  • Electrons in a particle beam each have a kinetic energy of 4.0 × 10 −17 J. What is the magnitude of the electric field that will
    14·2 answers
  • Given the picture below, what is the volume of the object?
    6·1 answer
  • At take off, a plane flies 100 km north before turning to fly 200 km east. How far is its destination from where the plane took
    10·2 answers
  • The behaviors that light exhibits are reflection, refraction, diffraction, polarization, and dispersion. Answer
    11·1 answer
  • A Formula One race car with mass 770.0 kg is speeding through a course in Monaco and enters a circular turn at 235.0 km/h in the
    6·1 answer
  • Which statement correctly describes sound waves
    7·1 answer
  • If you measure a change in temperature, then the _____.
    7·1 answer
  • A pathogen has entered your body and you become sick. You develop a fever and vomit. This is your body's way of trying to mainta
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!