Why do objects move at constant speed

Answers

Answer 1

Answer: Most objects move at a constant speed because of friction and acceleration. The constant speed keeps them in place, and keeps a balance.

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Who invented the prism?

Answers

Sir Isaac Newton invented the prism.He used it to study the diffraction.

Sir Isaac Newton introduced the prism 1st time while working on spectroscopy....
as a result of which he gave
Newton's Prism Theory....

A skateboarder skates down a ramp for 3 seconds. If his initial velocity was 0.8 m/s and · his final velocity was 7 m/s, what was his acceleration?

Answers

Answer:

The acceleration of the skateboarder is 2.067 m/s²

Explanation:

Given;

initial velocity of the skateboarder, u = 0.8 m/s

final velocity of the skateboarder, v = 7 m/s

time of motion, t = 3 s

The acceleration of the skateboarder is given as;

$a = (v-u)/(t)\n\na = (7-0.8)/(3)\n\na = 2.067 \ m/s^2$

Therefore, the acceleration of the skateboarder is 2.067 m/s²

If the frequencies of two component waves are 24 Hz and 20 Hz, they should produce _______ beats per second. A. 2
B. 8
C. 4
D. 12

Answers

This can be answered using the beat frequency formula, which is simply the difference between 2 frequencies.

Let: fᵇ = beat frequency
f₁ = first frequency
f₂ = second frequency

fᵇ = |f₁ - f₂|

substituting the values:
fᵇ = |24Hz - 20Hz|
fᵇ = 4Hz

The unit Hz also means beats per second, therefore:
fᵇ = 4 beats per second

Therefore, the answer is C. 4

C. 4 beats per second is correct

A dog walks 12 meters to the west and then 16 meters back to the east

Answers

Answer:

Explanation:

4 meters east

4 meters east dude woot

FASTA ball has 116.62 J of gravitational potential energy at a height of 85 m. What is the mass of the ball?

a.0.14 kg
b.0.37 kg
c.11.9 kg
d.21.82 kg