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
Firlakuza [10]
3 years ago
14

Mary slides down a snow-covered hill on a large piece of cardboard and then slides across a frozen pond at a constant velocity o

f +2.4 m/s. After Mary has reached the bottom of the hill and is sliding across the ice, Sue runs after her at a velocity of +4.4 m/s and hops on the cardboard. How fast do the two of them slide across the ice together on the cardboard? Mary's mass is 70 kg and Sue's is 60 kg. Ignore the mass of the cardboard and any friction between the cardboard and the snow and/or ice. (Indicate the direction with the sign of your answer.)
Physics
1 answer:
blagie [28]3 years ago
6 0

Explanatiso u bring the 2 to 4 and a dot and u get 24 :)

You might be interested in
Steel is an alloy of ___ One of the main reasons steel is used more widely than iron is because it’s___ than iron.
Tresset [83]
Iron, Stronger than iron
6 0
4 years ago
Read 2 more answers
18-A tire rotates at a constant 1.7 radians angle every 0.15 s. A) What is the tire's angular 2 points
aliya0001 [1]

Explanation:

A) use the formula:

angular \: velocity = angular \: dispacement \div time

B) use the formula:

linear \: velocity = radius \times angular \: velocity

with angular velocity u calculated in A)

5 0
3 years ago
. What is the velocity of a free-<br> falling object after 5 seconds?<br> (Use 10 m/s2 for gravity.)
Viefleur [7K]

Answer:

vf = 50 m/s

Explanation:

The equation for this kinematic problem is:

vf = vi + at

We are given:

a = 10m/s^2

vi = 0m/s

t = 5 sec

vf = ?

Solve for final velocity:

vf = 0 + 10(5)

vf = 50 m/s

8 0
3 years ago
Most of the mass of the milky way exists in the form of.
Andrews [41]

Answer: Dark matter.

Explanation: Hope it helps :)

7 0
3 years ago
Read 2 more answers
A drop in pitch as a vehicle passes is known as the effect
Georgia [21]

The Doppler Effect...

<span>It describes an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other.</span>

4 0
3 years ago
Read 2 more answers
Other questions:
  • When drawing a free-body diagram for an object on an inclined surface, which way does the force of gravity point? A. Straight do
    12·1 answer
  • Can someone explain to me what Murphy's law is and how it works?
    6·1 answer
  • A bass guitar string is 89 cm long with a fundamental frequency of 30 Hz. What is the wave speed on this string?
    15·1 answer
  • In photosynthesis, carbon dioxide is converted to oxygen and then released.
    6·2 answers
  • In a two-slit experiment, the slit separation is 3.34 ⋅ 10 − 5 m. The interference pattern is created on a screen that is 3.30 m
    7·1 answer
  • What do two or more elements combine to from?
    10·1 answer
  • After landing, a jetliner on a straight runway taxis to a stop at an average velocity of If the plane takes 7.00 s to come to re
    13·1 answer
  • A book is sitting on a table, completely still. What would happen if gravity suddenly stopped affecting the book? A. The book wo
    5·1 answer
  • Describe the effect of the mass on the net force.
    13·2 answers
  • What is the acceleration of a car that starts from rest and achieves a speed of 45 m/s in 5 seconds?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!