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
HACTEHA [7]
3 years ago
7

A girl rides her scooter to school, a total distance of 4.5km. She has to slow down twice to cross busy streets, but overall the

journey takes her 0.65h. What is her average speed during the trip?
Physics
2 answers:
Whitepunk [10]3 years ago
8 0

Answer:

6.93 km/h

Explanation:

To calculate her average speed, we need the "speed" formula, which is:

average speed = distance / time

You plug in your numbers and it will give you the answer.

Speed = 4.5km/0.65hr

           = 6.923 km/h

PilotLPTM [1.2K]3 years ago
3 0

Answer:

6.93 km/h

Explanation:

i looked it up hope this helps

You might be interested in
An object is moving in a straight line at constant speed. A resultant torce begins to act upon
alekssr [168]

Answer: The velocity magnitude or the velocity direction chages.

Explanation:

According to Newton's second law of motion, the acceleration of a system moved in same direction and is also directly proportional to the external force which acts on it while inversely proportional to the mass. The formula is: a = F/m

Based on the question, since the object obtains acceleration, then it can be infered that there will be changes in the velocity magnitude or the direction as a result of the motion.

3 0
2 years ago
You exert a 100-N force on a pulley system to lift 300-N. What is the mechanical advantage of this system? How many sections of
Andrei [34K]

Answer:

Mechanical advantage = 3

Explanation:

You exert a 100-N force on a pulley system to lift 300-N.

The mechanical advantage of the system is given by the ratio of output force to the input force.

Here, output force = 300 N and input force = 100 N

Mechanical advantage,

m=\dfrac{300}{100}\\\\m=3

Mechanical advantage is 3 it means that there are 3 sections of rope support. Hence, this is the required solution.

8 0
2 years ago
NO LINKS
zhenek [66]

Answer: A , D & F

Explanation:

6 0
2 years ago
Which statement about the effects of medium on the speed of a mechanical wave is true?
Anastasy [175]

C. A mechanical wave generally travels faster in gases than liquids.

7 0
3 years ago
What are some of the physical benefits to be derived from aerobic
VladimirAG [237]
Some of the benefits are increased heart muscles, increase in blood flow, and reduced body fat
6 0
3 years ago
Other questions:
  • Two piano strings are supposed to be vibrating at 220 Hz, but a piano tuner hears three beats every 2.5 s when they are played t
    12·1 answer
  • A 4.0×1010kg asteroid is heading directly toward the center of the earth at a steady 16 km/s. To save the planet, astronauts str
    11·1 answer
  • A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the
    10·1 answer
  • Which of the following is true about the atom shown? Choose all that apply. . . (I will have the Image Bellow). . *It is unstabl
    15·1 answer
  • An object in circular motion has velocity that is constantly changing. The direction of the acceleration is
    15·1 answer
  • The word back is up there!!!
    10·1 answer
  • What is the largest meteoroid that has collided with this planet
    12·1 answer
  • Astronauts on the first trip to Mars take along a pendulumthat has a period on earth of 1.50 {\rm s}. The period on Mars turns o
    12·1 answer
  • A light beam which is amplified into a strong concetrated beam of light is known as A) a laser. B) a transistor. C) a microwave
    12·2 answers
  • Mass is the amount of _____
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!