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
Rus_ich [418]
3 years ago
7

A boat travels west at 20km/h. The journey lasts 3hours. How far has the boat travelled?

Physics
2 answers:
zhannawk [14.2K]3 years ago
5 0

Answer:

A boat travels for three hours with a... A boat travels for three hours with a current of 3 mph and then returns the same distance against the current in four hours. What is the boat's speed in still water?

Explanation:

Ganezh [65]3 years ago
4 0

Answer:

20 km/hr x 3hr = 60 km

Explanation:

You might be interested in
A ball is thrown with a velocity of 35 meters per second at an angle of 30° above the horizontal. which quantity has a magnitude
enot [183]
The quantity that has a magnitude of zero when the ball is at the highest point in its trajectory is the vertical velocity.

In fact, the motion of the ball consists of two separate motions:
- the horizontal motion, on the x-axis, which is a uniform motion with constant velocity v_x=v_0 cos 30^{\circ}, where v_0=35 m/s
- the vertical motion, on the y-axis, which is a uniformly accelerated motion with constant acceleration g=9.81 m/s^2 directed downwards, and with initial velocity v_y=v_= sin 30^{\circ}. Due to the presence of the acceleration g on the vertical direction (pointing in the opposite direction of the initial vertical velocity), the vertical velocity of the ball decreases as it goes higher, up to a point where it becomes zero and it reverses its direction: when the vertical velocity becomes zero, the ball has reached its maximum height. 
5 0
2 years ago
What is the force that acts on an object and opposes its motion called?
Alika [10]
Friction is the force that acts on an object and opposes its motion
5 0
3 years ago
if the distance between two objects is doubled, the force of gravitation between them becomes __________ of initial value.
dexar [7]
1/4 of initial time :)
8 0
3 years ago
What are the first and second object in a gravitational field
vodka [1.7K]

downward force then reaction if you mean what forces

3 0
3 years ago
A truck covers 40.0 m in 7.10 s while uniformly slowing down to a final velocity of 2.05 m/s.
Alona [7]

Answer:

(A) Original speed= 9.22 m/s

(B) Acceleration= -1.0099 m\s^2

Explanation:

A truck covers 40m in 7.10 secs

The truck slows down at a uniform velocity of 2.05 m/s

(A) The original speed can be calculated as follows

Vo= 2(40)/7.10 - 2.05

= 80/7.10 - 2.05

= 11.2676 - 2.05

= 9.22m/s

(B) The acceleration can be calculated as follows

a= Vf-Vo/t

= 2.05-9.22/7.10

= -7.17/7.10

= -1.0099m/s^2

5 0
3 years ago
Other questions:
  • What system carries food to cells though the blood ?
    8·1 answer
  • Calculate the force between two objects that have
    13·1 answer
  • Which of the following would not increase the velocity of a sound wave in air? A. lowering the humidity of the air. B. increasin
    5·2 answers
  • Stacy begins by hanging metal washers from a force meter. Then she measures the downward pull on the washers. What
    14·1 answer
  • A m=7.2 gram object is accelerated at a rate of a=2.9 m/s^2. What force (in millinewtons) does the object experience? No need to
    11·1 answer
  • What are two types of forces exerted by magnets?
    12·2 answers
  • A pulley is used to raise a heavy crate. With the pulley it only takes an effort force of 223 N to
    12·1 answer
  • The achilles tendon is subjected to a large tension stress that results in a strain of 6%. if the unloaded tendon is 10 cm long,
    5·1 answer
  • Explain the 3 method of heat transfer<br>a. conduction<br>b. convection<br>c. radiation​
    5·1 answer
  • Stephen is looking through some design diagrams created for a specific application.He spots a diagram which uses a parallelogram
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!