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strojnjashka [21]
3 years ago
11

1. A woman driving in a car at 21 m/s pushes down on the gas pedal. 6 seconds later, she is moving at 36 m/s. What was her avera

ge acceleration?
Physics
1 answer:
Furkat [3]3 years ago
5 0

a=Vf-Vi/t=36-21/6=15/6=2.5m/s^2

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The object is more dense than the water
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1 A current pushes waste around in the ocean

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6 0
3 years ago
A tennis player tosses a tennis ball straight up and then catches it after 1.64 s at the same height as the point of release.
ipn [44]

A. The acceleration of the ball while it is in flight?

magnitude is 0 m/s² (magnitude is zero)

B. The velocity of the ball when it reaches its maximum height is 0 m/s (magnitude is zero)

C. The initial velocity of the ball 8.036 m/s upward

D. The maximum height reached by the ball is 3.29 m

<h3>A. How to determine the acceleration in the flight</h3>

Considering that the ball came to rest after 1.64s, it means the entire acceleration of the flight is zero as the ball was not moving in any form again.

<h3>B. How to determine the velocity at maximum height</h3>

At maximum height, the velocity of the ball is zero as it no longer has magnitude to keep going upwards. Hence the ball begins to ball down.

<h3>C. How to determine the initial velocity</h3>
  • Acceleration due to gravity (g) = 9.8 m/s²
  • Final velocity (v) = 0 m/s
  • Time of flight (T) = 1.64 s
  • Time to reach maximum height (t) = T / 2 = 1.64 / 2 = 0.82 s
  • Initial velocity (u) =?

v = u - gt (since the ball is going against gravity)

0 = u - (9.8 × 0.82)

0 = u - 8.036

Collect like terms

u = 0 + 8.036

u = 8.036 m/s upward

<h3>D. How to determine the maximum height reached by the ball</h3>
  • Time to reach maximum height (t) = T / 2 = 1.64 / 2 = 0.82 s
  • Acceleration due to gravity (g) = 9.8 m/s²
  • Maximum height (h)

h = ½gt²

h = ½ × 9.8 × 0.82²

h = 3.29 m

Learn more about motion under gravity:

brainly.com/question/20385439

#SPJ1

4 0
1 year ago
Two students, Jordan and Taylor, are talking about light. Jordan says that light behaves as a stream of particles. Taylor declar
FrozenT [24]

Answer:

"Both students are correct. When light is traveling through small openings, solids, liquids, gases, or a vacuum, it behaves like a wave. When it interacts with matter, it acts like a stream of particles."

Explanation:

just got it right

3 0
2 years ago
Fill in the blanks to complete the sentence.
mina [271]

The answer is:

Fill in the blanks to complete the sentence.

Light acts like a  PARTICAL  when it bounces off surfaces,

and acts like a  WAVE  when it bends around objects.

I hope this helps you :>

4 0
3 years ago
Read 2 more answers
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