PHYSICS HIGH SCHOOL

An object is moving to the right and speeding up. Its acceleration isA. positive
B. Negative
C. zero

Answers

Answer 1
Answer:

Answer:

Positive

Explanation:
Answer 2
Answer:

Answer:

positive

Explanation:

i'm reallt sorry if I'm wrong

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Describe other cytoplasmic cellular structures and explain their functions.

Answers

Cytoplasmic organelles are "little organs" that are suspended in the cytoplasm of the cell. Each type of organelle has a definite structure and a specific role in the function of the cell. Examples of cytoplasmic organelles are mitochondrion, ribosomes and endoplasmic reticulum.

A tennis ball with a speed of 15.7 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 14.444 m/s. If the ball is in contact with the wall for 0.0099 s, what is the average acceleration of the ball while it is in contact with the wall? Take "toward the wall" to be the positive direction. Answer in units of m/s 2 .

Answers

Answer:

-3044.848m/s^2

Explanation:

Initial velocity = 15.7 m/s (u)

Final velocity = -14.444 m/s (v) velocity after striking moving opposite direction.

Time = 0.0099 s

Average acceleration :

change in velocity/ total time

= V - U/t

= -14.444 m/s - 15.7 m/s/0.0099 s

= -30.144/0.0099 s

= -3044.848m/s^2

PLEASE HELP!!!
in scientific notation, how many micrograms make 1 kg

Answers

One kilogram is equal to 1,000,000,000 micrograms in scientific notation. This can be represented as 1 kg = 1.0 x 10^9 μg.

Please give brainliest

Force of attraction between the Earth(m=5.98x10^24) and a 70 kg student. distance of 6.38x10^6

Answers

F=G(m₁m₂/r²)
= 9.81(70*5.98x10²⁴/6.38x10⁶)
=9.81(6.56x10³¹)
=6.44x10³²

A bicycle rider travels 50.0 km in 2.5 hours. What is the cyclists speed

Answers

Hi,
Recall the formula V=d/t, where V stands for velocity or speed, d stands for distance and t stands for time. By substituting your values you get: V=50.0km/2.5h, which equals to 20km/h.

If a force of 12 n is applied to an object with a mass of 2kg the object will accelerate at

Answers

Using Newton's second law, F= ma
the acceleration would be>
F=ma
->F/m= a
->12/2= a
->6 = a

therefore acceleration is 6 ms^-2
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