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
Molodets [167]
3 years ago
5

A bus travelling 30.0 km/h east has a constant increase in speed of 1.5 m/s. What is its velocity 6.8s later

Physics
1 answer:
alekssr [168]3 years ago
7 0

Answer:

8.72 seconds before

Explanation:

and 27.1 secs after

You might be interested in
Explain why the "X" chromosome expresses more traits than the "y" chromosome.
wel

Explanation:

The X chromosome (females have 2 of them while males have 1) is five times larger than the Y chromosome and has 10 times the number of genes.

5 0
3 years ago
Compare and contrast the life cycle of a low mass star and a high mass star
True [87]
Low mass: Live for billions (trillions?) of years. The first low mass red dwarfs in this universe still haven't died off yet, so we aren't completely sure what happens when they "die." 

<span>Very High Mass: Run through their fuel exceedingly fast. *Die* relatively quickly (in the range of tens to hundreds of millions of years instead of billions and beyond) and go out with style, Supernova that will leave behind a neutron star (the *kind of very high mass stars" end this way) or a black hole (the *very very high mass stars* end this way.)</span>
6 0
3 years ago
A styrofoam container used as a picnic cooler contains a block of ice at 0°C. If 325 g of ice melts in 1 hour, how much heat ene
Sauron [17]

Answer:

30.0625 W

Explanation:

325 g/h   x    (1h x 1kg)/(3600s x 1000g)   x   3,33 x 10^5 J/Kg = 30.0625 J/Kg = 30.0625 W

8 0
4 years ago
What is the minimum speed must a salmon jumping at an angle of 35.2 leave the water in m/s?
yuradex [85]

Height of the waterfall is 0.449 m

its horizontal distance will be 2.1 m

now let say his speed is v with which he jumped out so here the two components of his velocity will be

v_x = vcos35.2 = 0.817 v

v_y = vsin35.2 = 0.576 v

here the acceleration due to gravity is 9.81 m/s^2 downwards

now we can find the time to reach the other end by y direction displacement equation

\Delta y = v_y * t + \frac{1}{2} at^2

-0.449 = 0.576 * v *t - \frac{1}{2}*9.81 * t^2

also from x direction we can say

\Delta x = v_x * t

2.1 = 0.817 v* t

now we have

v* t = 2.57

we will plug in this value into first equation

- 0.449 = 0.576 * 2.57 - 4.905 * t^2

1.93 = 4.905 * t^2

t = 0.63 s

now as we know that

v* t = 2.57

t = 0.63 s

v = \frac{2.57}{0.63}

v = 4.1 m/s

so his minimum speed of jump is 4.1 m/s

8 0
3 years ago
Who is ready for Track?? I am but I really am hating it rn
mars1129 [50]

Answer:

Me too

Explanation:

7 0
3 years ago
Other questions:
  • The ____ of a sound wave is a measure of its loudness.
    6·1 answer
  • A rod 16.0 cm long is uniformly charged and has a total charge of -25.0 µC. Determine the magnitude and direction of the electri
    9·1 answer
  • How to find velocity
    13·1 answer
  • A baseball travelling horizontally at 41 m/s [S] is hit by a baseball bat, causing its velocity to become 47 m/s [N]. The ball i
    9·1 answer
  • A conducting bar slides without friction on two parallel horizontal rails that are 50 cm apart and connected by a wire at one en
    14·1 answer
  • An example of constant velocity
    6·1 answer
  • When a satellite is in orbit around the Earth, the force of the gravity on the satellite is...
    13·1 answer
  • The speed you read on a speedometer is ____.
    11·1 answer
  • Could we see a galaxy that is 20 billion light-years away?.
    10·1 answer
  • A car traveling south is 200 kilometers from its starting point after 2 hours. What is the average velocity of the car?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!