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
Crank
2 years ago
9

Acceleration is positive when you are speeding up.

Physics
1 answer:
Vikki [24]2 years ago
8 0

Answer:

B Negative

Explanation:

Its negative because when your going 25 mph your moving faster and when your coming up to the stop sign you will start to slow down going 10 mph then 0 mph when you reach the stop sign so it will be negative.

You might be interested in
A baseball has a mass of 0.45 kg and is thrown with a speed of 25 m/s. what is the momentum of the baseball?
amm1812
The momentum<span> of a particle is defined as the product of its mass times its velocity. It is a vector quantity. Therefore, the momentum of the baseball would be as follows:

Momentum = mass x velocity
Momentum = 0.45 kg (25 m/s)
Momentum = 11.25 kg m/s</span>
7 0
3 years ago
Read 2 more answers
What is thermal energy defined as
vovangra [49]

Answer:

hermal energy is the energy that is generated and measured by heat. 

8 0
3 years ago
Read 2 more answers
A 20 kg mass is moving at 10 m/s and collides with a stationary 5 kg mass, transferring all its momentum in the collision, what
Fudgin [204]

Answer:

v = 40 [m/s].

Explanation:

Linear momentum is defined as the product of mass by Velocity. In this way, by means of the following equation, we can calculate the momentum.

P=m*v\\

where:

m = mass [kg]

v = velocity [m/s]

P =20*10\\P =200 [kg*m/s]

Since all momentum is transferred, we can say that this momentum is equal for the mass of 5 [kg]. In this way, we can determine the speed after the impact.

v = P/m\\v = 200/5\\v = 40 [m/s]

3 0
2 years ago
(15 POINTS) Victor drew a diagram to show the life cycle of a low-mass star.
Evgen [1.6K]
The answer is c so the area can grow
4 0
3 years ago
Read 2 more answers
A sample of a gas has a volume of 639 cm3 when the pressure is 75.9 kPa. What is the volume of the gas when the pressure is incr
const2013 [10]

Answer:

388 cm^3

Explanation:

For this problem, we can use Boyle's law, which states that for a gas at constant temperature, the product between pressure and volume remains constant:

pV=const.

which can also be rewritten as

p_1 V_1 = p_2 V_2

In our case, we have:

p_1 = 75.9 kPa is the initial pressure

V_1 = 639 cm^3 is the initial volume

p_2 = 125 kPa is the final pressure

Solving for V2, we find the final volume:

v_2 = \frac{p_1 V_1}{p_2}=\frac{(75.9)(639)}{125}=388 cm^3

7 0
3 years ago
Other questions:
  • Does the speedometer of a car read average speed or instantaneous speed?
    14·1 answer
  • Two events are observed in a frame of reference S to occur at the same space point, with the second event occurring after a time
    14·1 answer
  • How did early photosynthetic organisms change Earth’s atmosphere?
    8·1 answer
  • Match each item to its best description.
    6·2 answers
  • What is a cone of depression
    13·1 answer
  • Helpppppppppppppppppppp
    13·1 answer
  • Anybody wana play imvu or 2k
    13·2 answers
  • HELPPP<br><br><br> chchcuhckf hfjf
    7·1 answer
  • A 0.145 kg ball moving in the +x direction at 14 m/s is hit by a bat. The ball's final velocity is 20.0 m/s in the -x direction.
    8·1 answer
  • A transverse sinusoidal wave on a string has a period T= 25.0ms and travels in the negative x direction with a speed of 30.0 m/s
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!